Reaction mass of (9E)-9-Undecenal and (9Z)-9-Undecenal and undec-10-enal

Endpoint summary

Description of key information

Skin irritation (weight of evidence): irritating to the skin, 2018

1. Skin Irritation (Read-Across: undec-9-enal): irritating to the skin at 5000 mg/kg bw, eq. or similar to OECD TG 402, 1977

2. Skin Irritation (Read-Across: undec-9-enal): not irritating to the skin at 0.5% in SDA 39 C vehicle, eq. or similar to OECD TG 404, 1972

 

Eye irritation (weight of evidence): irritating to the eye, 2018

1. Eye Irritation (Read-Across: undec-9-enal): irritating to the eye, eq. or sim. to OECD 405, 1963

2. Eye Irritation (Read-Across: undec-9-enal): not irritating to the eye at 0.5% in SDA 39 C vehicle, eq. or similar to OECD TG 405, 1972

Key value for chemical safety assessment

Skin irritation / corrosion

Link to relevant study records

Reference

Reference 1

Endpoint:

skin irritation / corrosion, other

Remarks:

Available Acute Dermal Toxicity study (equivalent or similar to guideline: OECD TG 402), indicating potential local toxicity (skin irritation) at levels equal or exceeding 2000 mg/kg bw; study used in weight of evidence approach

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

weight of evidence

Study period:

1977

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Pre-GLP study following a method equivalent to a recognised guideline at a limit dose, with some deviations not expected to affect the reliability of the study. The source and target substances must have an aldehyde group at the 1-carbon position and either a terminal (10-position) or an internal alkene (9-position or 8-position; with the terminal alkyl group no larger than an ethyl group and/or should not multiply substituted). The substance alkyl chain length of the substance should be more than 6 carbons in length and less than 14 carbons in length and fulfil the mono-alkene definition. The substance should not have any branched akyl groups or side chains. The target and source share common structural elements in the same relative positions. The source and target have very similar physico-chemical properties and thus have similar expected toxicokinetic behaviour. The substances have similar in silico chemical reactivity predictions. This is observed within available in vivo toxicology testing where low level local and systemic toxicity is demonstrated and comparable between target and source. The substances therefore demonstrate chemical similarity.

Justification for type of information:

REPORTING FORMAT FOR THE ANALOGUE APPROACH
Further information is included in attachment to IUCLID section 13.

1. HYPOTHESIS FOR THE ANALOGUE APPROACH
The read-across is based on the hypothesis that the source and target substances have common structural features in the same relative positions. The source and target have similar physico-chemical, toxicological properties and because of common metabolism they share common or have similar breakdown products and therefore potential mechanisms of action. Further information is included in attachment to IUCLID section 13.

2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
The source and target chemicals have comparable chemical similarity. Further information is included in attachment to IUCLID section 13

3. ANALOGUE APPROACH JUSTIFICATION
The source substance is a chemically similar substance with common metabolism and common or similar degradants of the target substance. Further information is included in attachment to IUCLID section 13

4. DATA MATRIX
Further information is included in attachment to IUCLID section 13.

Reason / purpose for cross-reference:

read-across source

Reason / purpose for cross-reference:

read-across: supporting information

Reason / purpose for cross-reference:

reference to same study

Qualifier:

equivalent or similar to guideline

Guideline:

other: Acute Toxicity Dermal - OECD 402

Deviations:

yes

Remarks:

Limit dose of 5000mg/kg bw applied single dose; gross pathology completed.

Principles of method if other than guideline:

The principles of the method were in accordance with the US 16 CFR 1500.3 definitions.

GLP compliance:

no

Species:

rabbit

Strain:

not specified

Type of coverage:

not specified

Preparation of test site:

not specified

Vehicle:

unchanged (no vehicle)

Controls:

no

Amount / concentration applied:

TEST SITE
- Type of wrap if used: Not reported.

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 5000 mg/kg

Duration of treatment / exposure:

24h

Observation period:

14 days (see 'Details on Study Design').

Number of animals:

10 per dose level ; sex not specified.

Details on study design:

- Duration of observation period following administration: 14 days- Frequency of observations and weighing: Dermal reactions appear to be scored at 24 hours by the Draize scoring system. The rabbits were observed daily for 14 days for signs of toxicity, pharmacological effects and mortality. Body weights were recorded pretest and in survivors at 14 days.
- Necropsy of survivors performed: Yes.

Irritation / corrosion parameter:

other: erythema score

Value:

2.4

Remarks on result:

other:

Remarks:

Basis: mean. Time point: 24h. Max. score: 4.0. Reversibility: no data. (migrated information)

Irritation / corrosion parameter:

other: edema score

Value:

3

Remarks on result:

other:

Remarks:

Basis: mean. Time point: 24h. Max. score: 4.0. Reversibility: no data. (migrated information)

Irritant / corrosive response data:

Redness: 2/10 rabbits = mild redness (Score = 1) ; 6/10 rabbits = moderate skin irritation (score = 3) ; 1/10 rabbits severe (score = 4)
Edema: 10/10 rabbits = moderate (score = 3)

Interpretation of results:

Category 2 (irritant) based on GHS criteria

Remarks:

Criteria used for interpretation of results: EU and implementing expert judgment

Conclusions:

The target substance: is expected to produce positive local irritation responses at 5000 mg/kg bw.

Executive summary:

The pre-GLP study was performed on a source substance following a method similar to OECD TG 402 to assess the dermal toxicity of the test material to the rabbit. The test substance was evaluated in 10 rabbits. A dose of 5000 mg/kg test substance (undiluted), was applied for 24 hours. Skin observations were made 24 hours after patch removal and then daily for 14 days for signs of toxicity, pharmacological effects and mortality. No mortalities were observed. Very slight to well defined erythema and moderate edema were noted at 24 hours in all animals. Under the conditions of this study, the LD50 is considered to be greater than 5000 mg/kg.

The target substance: is expected to produce positive local irritation responses at 5000 mg/kg bw. Based on expert judgement and applying the precautionary principle, irritation can be expected to occur at 2000 mg/kg bw and therefore classification under Regulation (EC) 1272/2008: skin irritation category 2, is applied.

Reference 2

Endpoint:

skin irritation / corrosion, other

Remarks:

Available Acute Dermal Toxicity study (equivalent or similar to guideline: OECD TG 402), indicating potential local toxicity (skin irritation) at levels equal or exceeding 2000 mg/kg bw; study used in weight of evidence approach

Type of information:

experimental study

Adequacy of study:

weight of evidence

Study period:

1977

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Pre-GLP study following a method equivalent to a recognised guideline at a limit dose, with some deviations not expected to affect the reliability of the study. The source and target substances must have an aldehyde group at the 1-carbon position and either a terminal (10-position) or an internal alkene (9-position or 8-position; with the terminal alkyl group no larger than an ethyl group and/or should not multiply substituted). The substance alkyl chain length of the substance should be more than 6 carbons in length and less than 14 carbons in length and fulfil the mono-alkene definition. The substance should not have any branched akyl groups or side chains. The target and source share common structural elements in the same relative positions. The source and target have very similar physico-chemical properties and thus have similar expected toxicokinetic behaviour. The substances have similar in silico chemical reactivity predictions. This is observed within available in vivo toxicology testing where low level local and systemic toxicity is demonstrated and comparable between target and source. The substances therefore demonstrate chemical similarity.

Reason / purpose for cross-reference:

read-across: supporting information

Reason / purpose for cross-reference:

reference to same study

Qualifier:

equivalent or similar to guideline

Guideline:

other: Acute Toxicity Dermal - OECD 402

Deviations:

yes

Remarks:

Limit dose of 5000mg/kg bw applied single dose; gross pathology completed.

Principles of method if other than guideline:

The principles of the method were in accordance with the US 16 CFR 1500.3 definitions.

GLP compliance:

no

Species:

rabbit

Strain:

not specified

Type of coverage:

not specified

Preparation of test site:

not specified

Vehicle:

unchanged (no vehicle)

Controls:

no

Amount / concentration applied:

TEST SITE
- Type of wrap if used: Not reported.

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 5000 mg/kg

Duration of treatment / exposure:

24h

Observation period:

14 days (see 'Details on Study Design').

Number of animals:

10 per dose level ; sex not specified.

Details on study design:

- Duration of observation period following administration: 14 days- Frequency of observations and weighing: Dermal reactions appear to be scored at 24 hours by the Draize scoring system. The rabbits were observed daily for 14 days for signs of toxicity, pharmacological effects and mortality. Body weights were recorded pretest and in survivors at 14 days.
- Necropsy of survivors performed: Yes.

Irritation / corrosion parameter:

other: erythema score

Value:

2.4

Remarks on result:

other:

Remarks:

Basis: mean. Time point: 24h. Max. score: 4.0. Reversibility: no data. (migrated information)

Irritation / corrosion parameter:

other: edema score

Value:

3

Remarks on result:

other:

Remarks:

Basis: mean. Time point: 24h. Max. score: 4.0. Reversibility: no data. (migrated information)

Irritant / corrosive response data:

Redness: 2/10 rabbits = mild redness (Score = 1) ; 6/10 rabbits = moderate skin irritation (score = 3) ; 1/10 rabbits severe (score = 4)
Edema: 10/10 rabbits = moderate (score = 3)

Interpretation of results:

Category 2 (irritant) based on GHS criteria

Remarks:

Criteria used for interpretation of results: EU and implementing expert judgment

Conclusions:

Under the conditions of this study, the test item produced positive local irritation responses at 5000 mg/kg bw.

Executive summary:

The pre-GLP study was performed following a method similar to OECD TG 402 to assess the dermal toxicity of the test material to the rabbit. The test substance was evaluated in 10 rabbits. A dose of 5000 mg/kg test substance (undiluted), was applied for 24 hours. Skin observations were made 24 hours after patch removal and then daily for 14 days for signs of toxicity, pharmacological effects and mortality. No mortalities were observed. Very slight to well defined erythema and moderate edema were noted at 24 hours in all animals. Under the conditions of this study, the LD50 is considered to be greater than 5000 mg/kg.

Reference 3

Endpoint:

skin irritation: in vivo

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

weight of evidence

Study period:

1972

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Pre-GLP study following a method similar to that of a recognised guideline. The source and target substances must have an aldehyde group at the 1-carbon position and either a terminal (10-position) or an internal alkene (9-position or 8-position; with the terminal alkyl group no larger than an ethyl group and/or should not multiply substituted). The substance alkyl chain length of the substance should be more than 6 carbons in length and less than 14 carbons in length and fulfil the mono-alkene definition. The substance should not have any branched alkyl groups or side chains. The target and source share common structural elements in the same relative positions. The source and target have very similar physico-chemical properties and thus have similar expected toxicokinetic behaviour. The substances have similar in silico chemical reactivity predictions. This is observed within available in vivo toxicology testing where low level local and systemic toxicity is demonstrated and comparable between target and source. The substances therefore demonstrate chemical similarity.

Justification for type of information:

REPORTING FORMAT FOR THE ANALOGUE APPROACH
Further information is included in attachment to IUCLID section 13.

1. HYPOTHESIS FOR THE ANALOGUE APPROACH
The read-across is based on the hypothesis that the source and target substances have common structural features in the same relative positions. The source and target have similar physico-chemical, toxicological properties and because of common metabolism they share common or have similar breakdown products and therefore potential mechanisms of action. Further information is included in attachment to IUCLID section 13.

2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
The source and target chemicals have comparable chemical similarity. Further information is included in attachment to IUCLID section 13

3. ANALOGUE APPROACH JUSTIFICATION
The source substance is a chemically similar substance with common metabolism and common or similar degradants of the target substance. Further information is included in attachment to IUCLID section 13

4. DATA MATRIX
Further information is included in attachment to IUCLID section 13.

Reason / purpose for cross-reference:

read-across source

Reason / purpose for cross-reference:

read-across: supporting information

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 404 (Acute Dermal Irritation / Corrosion)

Principles of method if other than guideline:

Equivalent or similar to USA Federal Hazardous Substances Act tests to 16 CFR 1500.3 - application for 24 hours and then observations at 24 and 72 hours.

GLP compliance:

no

Species:

rabbit

Strain:

other: albino

Type of coverage:

occlusive

Preparation of test site:

clipped

Vehicle:

other: SDA 39 C

Controls:

not specified

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.5mL (net test item and vehicle)
- Concentration (if solution): 0.5%

VEHICLE
- Concentration (if solution): 99.5%

Duration of treatment / exposure:

24h

Observation period:

48h up to 72h

Number of animals:

3

Details on study design:

TEST SITE
- Area of exposure: 2 x 2 cm
- % coverage: Not reported. On the day prior to the experiment 10% of the total body area of the rabbits was carefully clipped free of all hair. Small animal clippers were used since these left the skin undisturbed. On the posterior of the clipped area several minor abrasions were made so as to penetrate the stratum corneum but not disturb the derma. This is to prevent bleeding.
- Type of wrap if used: Webril patches / Occlusive dressing

REMOVAL OF TEST SUBSTANCE
- Washing (if done): None.

SCORING SYSTEM: Draize Scoring system.

Irritation parameter:

erythema score

Basis:

mean

Remarks:

n = 3

Time point:

24/48/72 h

Score:

0

Max. score:

4

Remarks on result:

no indication of irritation

Remarks:

USA Federal Hazardous Substances Act tests to 16 CFR 1500.3 terminate observations at 72hours. Time points 24 and 72hours are used in intact skin

Irritation parameter:

edema score

Basis:

mean

Remarks:

n = 3

Time point:

24/48/72 h

Score:

0

Max. score:

4

Remarks on result:

no indication of irritation

Remarks:

USA Federal Hazardous Substances Act tests to 16 CFR 1500.3 terminate observations at 72hours. Time points 24 and 72hours are used in intact skin

Irritation parameter:

primary dermal irritation index (PDII)

Basis:

mean

Remarks:

n = 3

Time point:

72 h

Score:

0

Max. score:

8

Remarks on result:

no indication of irritation

Irritant / corrosive response data:

No reponses to intact skin (or abraded skin) were observed.

Interpretation of results:

GHS criteria not met

Remarks:

Criteria used for interpretation of results: EU

Conclusions:

For the target substance: it is not considered to be irritating to the skin of albino rabbits (within 0.5% SDA 39 C vehicle).

Executive summary:

The non-GLP study was completed on a source substance under a guideline similar to OECD 404, to assess the irritancy potential of the test material to the skin of the albino rabbit. The test substance was evaluated in 3 rabbits. A dose of 0.5 ml test substance (0.5% test item in SDA 39 C vehicle) was applied to intact and abraded clipped dorsal skin site under a occlusive dressing for 24 hours. Skin observations were made 24 and 72 hours after patch removal. No erythema and edema responses were noted at 24 or 72 hours in both intact and abraded skin. Under the conditions of the study the test material produced a mean primary irritation index (PII) of 0 and is considered to be non-irritating to skin.

The target substance: is not expected to produce positive local irritation responses. Based on expert judgement when applied to the skin at 0.5% within SDA 39 C vehicle.

Reference 4

Endpoint:

skin irritation: in vivo

Type of information:

experimental study

Adequacy of study:

weight of evidence

Study period:

1972

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Pre-GLP study following a method similar to that of a recognised guideline. The source and target substances must have an aldehyde group at the 1-carbon position and either a terminal (10-position) or an internal alkene (9-position or 8-position; with the terminal alkyl group no larger than an ethyl group and/or should not multiply substituted). The substance alkyl chain length of the substance should be more than 6 carbons in length and less than 14 carbons in length and fulfil the mono-alkene definition. The substance should not have any branched alkyl groups or side chains. The target and source share common structural elements in the same relative positions. The source and target have very similar physico-chemical properties and thus have similar expected toxicokinetic behaviour. The substances have similar in silico chemical reactivity predictions. This is observed within available in vivo toxicology testing where low level local and systemic toxicity is demonstrated and comparable between target and source. The substances therefore demonstrate chemical similarity.

Reason / purpose for cross-reference:

read-across: supporting information

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 404 (Acute Dermal Irritation / Corrosion)

Principles of method if other than guideline:

Equivalent or similar to USA Federal Hazardous Substances Act tests to 16 CFR 1500.3 - application for 24 hours and then observations at 24 and 72 hours.

GLP compliance:

no

Species:

rabbit

Strain:

other: albino

Type of coverage:

occlusive

Preparation of test site:

clipped

Vehicle:

other: SDA 39 C

Controls:

not specified

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.5mL (net test item and vehicle)
- Concentration (if solution): 0.5%

VEHICLE
- Concentration (if solution): 99.5%

Duration of treatment / exposure:

24h

Observation period:

48h up to 72h

Number of animals:

3

Details on study design:

TEST SITE
- Area of exposure: 2 x 2 cm
- % coverage: Not reported. On the day prior to the experiment 10% of the total body area of the rabbits was carefully clipped free of all hair. Small animal clippers were used since these left the skin undisturbed. On the posterior of the clipped area several minor abrasions were made so as to penetrate the stratum corneum but not disturb the derma. This is to prevent bleeding.
- Type of wrap if used: Webril patches / Occlusive dressing

REMOVAL OF TEST SUBSTANCE
- Washing (if done): None.

SCORING SYSTEM: Draize Scoring system.

Irritation parameter:

erythema score

Basis:

mean

Remarks:

n = 3

Time point:

24/48/72 h

Score:

0

Max. score:

4

Remarks on result:

no indication of irritation

Remarks:

USA Federal Hazardous Substances Act tests to 16 CFR 1500.3 terminate observations at 72hours. Time points 24 and 72hours are used in intact skin

Irritation parameter:

edema score

Basis:

mean

Remarks:

n = 3

Time point:

24/48/72 h

Score:

0

Max. score:

4

Remarks on result:

no indication of irritation

Remarks:

USA Federal Hazardous Substances Act tests to 16 CFR 1500.3 terminate observations at 72hours. Time points 24 and 72hours are used in intact skin

Irritation parameter:

primary dermal irritation index (PDII)

Basis:

mean

Remarks:

n = 3

Time point:

72 h

Score:

0

Max. score:

8

Remarks on result:

no indication of irritation

Irritant / corrosive response data:

No reponses to intact skin (or abraded skin) were observed.

Interpretation of results:

GHS criteria not met

Remarks:

Criteria used for interpretation of results: EU

Conclusions:

Under the conditions of this study the test item is not considered to be irritating to the skin of albino rabbits (within 0.5% SDA 39 C vehicle).

Executive summary:

The non-GLP study was completed under a guideline similar to OECD 404, to assess the irritancy potential of the test material to the skin of the albino rabbit. The test substance was evaluated in 3 rabbits. A dose of 0.5 ml test substance (0.5% test item in SDA 39 C vehicle) was applied to intact and abraded clipped dorsal skin site under a occlusive dressing for 24 hours. Skin observations were made 24 and 72 hours after patch removal. No erythema and edema responses were noted at 24 or 72 hours in both intact and abraded skin. Under the conditions of the study the test material produced a mean primary irritation index (PII) of 0 and is considered to be non-irritating to skin.

Reference 5

Endpoint:

skin irritation: in vitro / ex vivo

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

an in vitro skin irritation study does not need to be conducted because adequate data from an in vivo skin irritation study are available

other:

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
In accordance with REACH Regulation (EC) 1907/2006 as amended: Annex VII, section 8..1: the skin corrosion/irritation: in vitro / ex vivo study does not need to be conducted based REACH Regulation (EC) 1907/2006: Annex XI section 1.2 (weight of evidence) and section 1.5 (grouping of substances and read-across approach). This is based on existing data through read-across to structural analogue(s) and/or constituents of the substance sufficient for classification and labelling being already available. According to ECHA Guidance on Information Requirements and Chemical Safety Assessment (Chapter R.7a: Endpoint Specific Guidance, R.7.2, July 2017) the study does not need to be conducted.

Reason / purpose for cross-reference:

data waiving: supporting information

Endpoint conclusion

Endpoint conclusion:

adverse effect observed (irritating)

Eye irritation

Link to relevant study records

Reference

Reference 1

Endpoint:

eye irritation: in vivo

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

weight of evidence

Study period:

1963

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Pre-GLP study following a method similar to a recognised OECD guideline. The source and target substances must have an aldehyde group at the 1-carbon position and either a terminal (10-position) or an internal alkene (9-position or 8-position; with the terminal alkyl group no larger than an ethyl group and/or should not multiply substituted). The substance alkyl chain length of the substance should be more than 6 carbons in length and less than 14 carbons in length and fulfil the mono-alkene definition. The substance should not have any branched akyl groups or side chains. The target and source share common structural elements in the same relative positions. The source and target have very similar physico-chemical properties and thus have similar expected toxicokinetic behaviour. The substances have similar in silico chemical reactivity predictions. This is observed within available in vivo toxicology testing where low level local and systemic toxicity is demonstrated and comparable between target and source. The substances therefore demonstrate chemical similarity.

Justification for type of information:

REPORTING FORMAT FOR THE ANALOGUE APPROACH
Further information is included in attachment to IUCLID section 13.

1. HYPOTHESIS FOR THE ANALOGUE APPROACH
The read-across is based on the hypothesis that the source and target substances have common structural features in the same relative positions. The source and target have similar physico-chemical, toxicological properties and because of common metabolism they share common or have similar breakdown products and therefore potential mechanisms of action. Further information is included in attachment to IUCLID section 13.

2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
The source and target chemicals have comparable chemical similarity. Further information is included in attachment to IUCLID section 13

3. ANALOGUE APPROACH JUSTIFICATION
The source substance is a chemically similar substance with common metabolism and common or similar degradants of the target substance. Further information is included in attachment to IUCLID section 13

4. DATA MATRIX
Further information is included in attachment to IUCLID section 13.

Reason / purpose for cross-reference:

read-across source

Reason / purpose for cross-reference:

read-across: supporting information

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 405 (Acute Eye Irritation / Corrosion)

GLP compliance:

no

Species:

rabbit

Strain:

other: albino rabbits

Details on test animals or tissues and environmental conditions:

not reported

Vehicle:

not specified

Controls:

yes, concurrent no treatment

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.1 mL
- Concentration (if solution): not reported

Duration of treatment / exposure:

Each animal had 0.1 ml of the test sample instilled into the right eye with no further treatment. The untreated left eye of each animal served as itsown control.

Observation period (in vivo):

Both the treated and control eyes were examined every twenty-four hours for four days and then again on the seventh day.

Number of animals or in vitro replicates:

3

Details on study design:

REMOVAL OF TEST SUBSTANCE
- Washing (if done): no

SCORING SYSTEM: The scorings recorded were made according to the Draize scale for scoring ocular lesions.

TOOL USED TO ASSESS SCORE: not reported

Irritation parameter:

cornea opacity score

Basis:

mean

Remarks:

n = 3

Time point:

24/48/72 h

Score:

0

Max. score:

12

Remarks on result:

no indication of irritation

Remarks:

maximum category score =4

Irritation parameter:

iris score

Basis:

mean

Remarks:

n = 3

Time point:

24/48/72 h

Score:

0

Max. score:

8

Remarks on result:

no indication of irritation

Remarks:

maximum category score = 2

Irritation parameter:

conjunctivae score

Basis:

mean

Remarks:

n = 3

Time point:

24/48/72 h

Score:

2.33

Max. score:

9

Reversibility:

fully reversible within: 7 days

Remarks on result:

positive indication of irritation

Remarks:

maximum category score = 3

Irritation parameter:

chemosis score

Basis:

mean

Remarks:

n = 3

Time point:

24/48/72 h

Score:

1.22

Max. score:

12

Reversibility:

fully reversible within: 7 days

Remarks on result:

other:

Remarks:

maximum category score = 4

Irritant / corrosive response data:

No corneal opacity or iris congestion was observed. A diffuse redness of the vessels of the palpebral conjunctivae did occur. This injection was accompanied by a partial eversion of the lids and some discharge. On the 7th day observation of the conjuncitvae was normal.

Applicant recalcluated the scoring to the EU/GHS scoring criteria. Individual scoring was presented within the study report.

Interpretation of results:

Category 2 (irritating to eyes) based on GHS criteria

Remarks:

Criteria used for interpretation of results: EU

Conclusions:

The target substance: is expected to irritating the eyes of albino rabbits.

Executive summary:

The study was performed on a source substance to assess the irritancy potential of the test material to the eye following a single application in albino white rabbits. The pre-GLP study was completed under a method similar to OECD 405. A volume of 0.1 ml of the test material was placed into one eye of 3 animals. The other eye remained untreated and was used for control purposes. Assessment of ocular damage/irritation was made every 24 hour for 4 days and again on day 7 using scoring based on the Draize scale for scoring occular lesions. Instillation of the test material did not produce any corneal opacity or iris congestion. A diffuse redness of the vessels of the palpebral conjunctivae did occur. This injection was accompanied by a partial eversion of the lids and some discharge. On the seventh day of observation the conjunctivae were normal in all test animals. Under the conditions of this study, the test material is considered to be irritating the eyes of albino rabbits.

The target substance: is expected to produce positive local irritation responses based on expert judgement and applying the precautionary principle, therefore classification under Regulation (EC) 1272/2008: eye irritation category 2, is applied.

Reference 2

Endpoint:

eye irritation: in vivo

Type of information:

experimental study

Adequacy of study:

weight of evidence

Study period:

1963

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Pre-GLP study following a method similar to a recognised OECD guideline. The source and target substances must have an aldehyde group at the 1-carbon position and either a terminal (10-position) or an internal alkene (9-position or 8-position; with the terminal alkyl group no larger than an ethyl group and/or should not multiply substituted). The substance alkyl chain length of the substance should be more than 6 carbons in length and less than 14 carbons in length and fulfil the mono-alkene definition. The substance should not have any branched akyl groups or side chains. The target and source share common structural elements in the same relative positions. The source and target have very similar physico-chemical properties and thus have similar expected toxicokinetic behaviour. The substances have similar in silico chemical reactivity predictions. This is observed within available in vivo toxicology testing where low level local and systemic toxicity is demonstrated and comparable between target and source. The substances therefore demonstrate chemical similarity.

Reason / purpose for cross-reference:

read-across: supporting information

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 405 (Acute Eye Irritation / Corrosion)

GLP compliance:

no

Species:

rabbit

Strain:

other: albino rabbits

Details on test animals or tissues and environmental conditions:

not reported

Vehicle:

not specified

Controls:

yes, concurrent no treatment

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.1 mL
- Concentration (if solution): not reported

Duration of treatment / exposure:

Each animal had 0.1 ml of the test sample instilled into the right eye with no further treatment. The untreated left eye of each animal served as itsown control.

Observation period (in vivo):

Both the treated and control eyes were examined every twenty-four hours for four days and then again on the seventh day.

Number of animals or in vitro replicates:

3

Details on study design:

REMOVAL OF TEST SUBSTANCE
- Washing (if done): no

SCORING SYSTEM: The scorings recorded were made according to the Draize scale for scoring ocular lesions.

TOOL USED TO ASSESS SCORE: not reported

Irritation parameter:

cornea opacity score

Basis:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

12

Remarks on result:

other: n=3; maximum category score =4

Irritation parameter:

iris score

Basis:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

8

Remarks on result:

other: n=3; maximum category score = 2

Irritation parameter:

conjunctivae score

Basis:

mean

Time point:

24/48/72 h

Score:

2.33

Max. score:

9

Reversibility:

fully reversible within: 7 days

Remarks on result:

other: n=3 ; maximum category score = 3

Irritation parameter:

chemosis score

Basis:

mean

Time point:

24/48/72 h

Score:

1.22

Max. score:

12

Reversibility:

fully reversible within: 7 days

Remarks on result:

other: n=3; maximum category score = 4

Irritant / corrosive response data:

No corneal opacity or iris congestion was observed. A diffuse redness of the vessels of the palpebral conjunctivae did occur. This injection was accompanied by a partial eversion of the lids and some discharge. On the 7th day observation of the conjuncitvae was normal.

Applicant recalcluated the scoring to the EU/GHS scoring criteria. Individual scoring was presented within the study report.

Interpretation of results:

Category 2 (irritating to eyes) based on GHS criteria

Remarks:

Criteria used for interpretation of results: EU

Conclusions:

Under the conditions of this study, the test item is considered to be irritating the eyes of albino rabbits.

Executive summary:

The study was performed to assess the irritancy potential of the test material to the eye following a single application in albino white rabbits. The pre-GLP study was completed under a method similar to OECD 405. A volume of 0.1 ml of the test material was placed into one eye of 3 animals. The other eye remained untreated and was used for control purposes. Assessment of ocular damage/irritation was made every 24 hour for 4 days and again on day 7 using scoring based on the Draize scale for scoring occular lesions. Instillation of the test material did not produce any corneal opacity or iris congestion. A diffuse redness of the vessels of the palpebral conjunctivae did occur. This injection was accompanied by a partial eversion of the lids and some discharge. On the seventh day of observation the conjunctivae were normal in all test animals. Under the conditions of this study, the test material is considered to be irritating the eyes of albino rabbits.

Reference 3

Endpoint:

eye irritation: in vivo

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

weight of evidence

Study period:

1972

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Pre-GLP study following a method similar to a recognised OECD guideline. The source and target substances must have an aldehyde group at the 1-carbon position and either a terminal (10-position) or an internal alkene (9-position or 8-position; with the terminal alkyl group no larger than an ethyl group and/or should not multiply substituted). The substance alkyl chain length of the substance should be more than 6 carbons in length and less than 14 carbons in length and fulfil the mono-alkene definition. The substance should not have any branched akyl groups or side chains. The target and source share common structural elements in the same relative positions. The source and target have very similar physico-chemical properties and thus have similar expected toxicokinetic behaviour. The substances have similar in silico chemical reactivity predictions. This is observed within available in vivo toxicology testing where low level local and systemic toxicity is demonstrated and comparable between target and source. The substances therefore demonstrate chemical similarity.

Justification for type of information:

REPORTING FORMAT FOR THE ANALOGUE APPROACH
Further information is included in attachment to IUCLID section 13.

1. HYPOTHESIS FOR THE ANALOGUE APPROACH
The read-across is based on the hypothesis that the source and target substances have common structural features in the same relative positions. The source and target have similar physico-chemical, toxicological properties and because of common metabolism they share common or have similar breakdown products and therefore potential mechanisms of action. Further information is included in attachment to IUCLID section 13.

2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
The source and target chemicals have comparable chemical similarity. Further information is included in attachment to IUCLID section 13

3. ANALOGUE APPROACH JUSTIFICATION
The source substance is a chemically similar substance with common metabolism and common or similar degradants of the target substance. Further information is included in attachment to IUCLID section 13

4. DATA MATRIX
Further information is included in attachment to IUCLID section 13.

Reason / purpose for cross-reference:

read-across source

Reason / purpose for cross-reference:

read-across: supporting information

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 405 (Acute Eye Irritation / Corrosion)

GLP compliance:

no

Species:

rabbit

Strain:

other: albino

Details on test animals or tissues and environmental conditions:

not reported

Vehicle:

other: SDA 39 C

Controls:

yes, concurrent no treatment

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.1mL
- Concentration (if solution): 0.5%

Duration of treatment / exposure:

Each animal had 0.1 ml. of the test sample instilled into the right eye with no further treatment.

Observation period (in vivo):

Both the treated and control eyes were examined every twenty-four hours for four days and then again on the seventh day.

Number of animals or in vitro replicates:

3

Details on study design:

REMOVAL OF TEST SUBSTANCE
- Washing (if done): no

SCORING SYSTEM: The scorings recorded were made according to the Draize scale for scoring ocular lesions.

Irritation parameter:

cornea opacity score

Basis:

mean

Time point:

other: 1, 2, 3, 4, 7d

Score:

0

Max. score:

80

Irritation parameter:

iris score

Basis:

mean

Time point:

other: 1, 2, 3, 4, 7 d

Score:

0

Max. score:

10

Irritation parameter:

conjunctivae score

Basis:

mean

Time point:

other: 1,2,3,4,7 d

Score:

2

Max. score:

20

Reversibility:

fully reversible within: 7 days

Irritation parameter:

cornea opacity score

Basis:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

12

Remarks on result:

other: n=3 ; maximum category score = 4

Irritation parameter:

iris score

Basis:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

8

Remarks on result:

other: n=3 ; maximum category score = 2

Irritation parameter:

conjunctivae score

Basis:

mean

Time point:

24/48/72 h

Score:

0.67

Max. score:

9

Reversibility:

fully reversible within: 7 days

Remarks on result:

other: n=3 ; maximum category score = 3

Irritation parameter:

chemosis score

Basis:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

12

Remarks on result:

other: n=3 ; maximum category score = 4

Irritant / corrosive response data:

Instillation of 0. 1 ml. of the test material into the right eye of each of three rabbits, produced a very slight vessel injection. These eyes were normal on the third day of observation.

Applicant recalculated the scoring to the EU/GHS scoring criteria. Individual scoring was presented within the study report.

Interpretation of results:

GHS criteria not met

Remarks:

Criteria used for interpretation of results: EU

Conclusions:

For the target substance: it is not considered to be irritating to the eyes of albino rabbits (within 0.5% SDA 39 C vehicle).

Executive summary:

The study was performed on a source substance to assess the irritancy potential of the test material to the eye following a single application in albino white rabbits. The pre-GLP study was completed under a method similar to OECD 405. A volume of 0.1 ml of the test material (0.5% in SDA vehicle) was placed into one eye of 3 animals. The other eye remained untreated and was used for control purposes. Assessment of ocular damage/irritation was made every 24 hour for 4 days and again on day 7 using scoring based on the Draize scale for scoring occular lesions. Instillation of the test material did not produce any corneal opacity or iris congestion. A very slight vessel injection was observed on day 1 ad 2 in all three animals. On the seventh day of observation the conjunctivae were normal in all test animals. Under the conditions of this study the test material is not considered to be irritating the eyes of albino rabbits.

The target substance: is not expected to produce positive local irritation responses. Based on expert judgement when applied to the eye at 0.5% within SDA 39 C vehicle.

Reference 4

Endpoint:

eye irritation: in vivo

Type of information:

experimental study

Adequacy of study:

weight of evidence

Study period:

1972

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Pre-GLP study following a method similar to a recognised OECD guideline. The source and target substances must have an aldehyde group at the 1-carbon position and either a terminal (10-position) or an internal alkene (9-position or 8-position; with the terminal alkyl group no larger than an ethyl group and/or should not multiply substituted). The substance alkyl chain length of the substance should be more than 6 carbons in length and less than 14 carbons in length and fulfil the mono-alkene definition. The substance should not have any branched akyl groups or side chains. The target and source share common structural elements in the same relative positions. The source and target have very similar physico-chemical properties and thus have similar expected toxicokinetic behaviour. The substances have similar in silico chemical reactivity predictions. This is observed within available in vivo toxicology testing where low level local and systemic toxicity is demonstrated and comparable between target and source. The substances therefore demonstrate chemical similarity.

Reason / purpose for cross-reference:

read-across: supporting information

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 405 (Acute Eye Irritation / Corrosion)

GLP compliance:

no

Species:

rabbit

Strain:

other: albino

Details on test animals or tissues and environmental conditions:

not reported

Vehicle:

other: SDA 39 C

Controls:

yes, concurrent no treatment

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.1mL
- Concentration (if solution): 0.5%

Duration of treatment / exposure:

Each animal had 0.1 ml. of the test sample instilled into the right eye with no further treatment.

Observation period (in vivo):

Both the treated and control eyes were examined every twenty-four hours for four days and then again on the seventh day.

Number of animals or in vitro replicates:

3

Details on study design:

REMOVAL OF TEST SUBSTANCE
- Washing (if done): no

SCORING SYSTEM: The scorings recorded were made according to the Draize scale for scoring ocular lesions.

Irritation parameter:

cornea opacity score

Basis:

mean

Time point:

other: 1, 2, 3, 4, 7d

Score:

0

Max. score:

80

Irritation parameter:

iris score

Basis:

mean

Time point:

other: 1, 2, 3, 4, 7 d

Score:

0

Max. score:

10

Irritation parameter:

conjunctivae score

Basis:

mean

Time point:

other: 1,2,3,4,7 d

Score:

2

Max. score:

20

Reversibility:

fully reversible within: 7 days

Irritation parameter:

cornea opacity score

Basis:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

12

Remarks on result:

other: n=3 ; maximum category score = 4

Irritation parameter:

iris score

Basis:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

8

Remarks on result:

other: n=3 ; maximum category score = 2

Irritation parameter:

conjunctivae score

Basis:

mean

Time point:

24/48/72 h

Score:

0.67

Max. score:

9

Reversibility:

fully reversible within: 7 days

Remarks on result:

other: n=3 ; maximum category score = 3

Irritation parameter:

chemosis score

Basis:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

12

Remarks on result:

other: n=3 ; maximum category score = 4

Irritant / corrosive response data:

Instillation of 0. 1 ml. of the test material into the right eye of each of three rabbits, produced a very slight vessel injection. These eyes were normal on the third day of observation.

Applicant recalculated the scoring to the EU/GHS scoring criteria. Individual scoring was presented within the study report.

Interpretation of results:

GHS criteria not met

Remarks:

Criteria used for interpretation of results: EU

Conclusions:

Under the conditions of this study, the test substance is not considered to be irritating to the eyes of albino rabbits (within 0.5% SDA 39 C vehicle).

Executive summary:

The study was performed to assess the irritancy potential of the test material to the eye following a single application in albino white rabbits. The pre-GLP study was completed under a method similar to OECD 405. A volume of 0.1 ml of the test material (0.5% in SDA vehicle) was placed into one eye of 3 animals. The other eye remained untreated and was used for control purposes. Assessment of ocular damage/irritation was made every 24 hour for 4 days and again on day 7 using scoring based on the Draize scale for scoring occular lesions. Instillation of the test material did not produce any corneal opacity or iris congestion. A very slight vessel injection was observed on day 1 ad 2 in all three animals. On the seventh day of observation the conjunctivae were normal in all test animals. Under the conditions of this study the test material is not considered to be irritating the eyes of albino rabbits.

Reference 5

Endpoint:

eye irritation: in vitro / ex vivo

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

an in vitro eye irritation study does not need to be conducted because adequate data from an in vivo eye irritation study are available

other:

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
In accordance with REACH Regulation (EC) 1907/2006 as amended: Annex VII, section 8.2.1: the serious eye damage/eye irritation: in vitro / ex vivo study does not need to be conducted based REACH Regulation (EC) 1907/2006: Annex XI section 1.2 (weight of evidence) and section 1.5 (grouping of substances and read-across approach). This is based on existing data on read-across to structural analogue(s) and/or constituents of the substance sufficient for classification and labelling being already available. According to ECHA Guidance on Information Requirements and Chemical Safety Assessment (Chapter R.7a: Endpoint Specific Guidance, R.7.2, July 2017) the study does not need to be conducted.

Reason / purpose for cross-reference:

data waiving: supporting information

Endpoint conclusion

Endpoint conclusion:

adverse effect observed (irritating)

Respiratory irritation

Endpoint conclusion

Endpoint conclusion:

adverse effect observed (irritating)

Additional information

Skin irritation:

1. Eq. to OECD 402, 1977: Read-Across SOURCE (undec-9-enal): The pre-GLP study was performed following a method similar to OECD 402 to assess the dermal toxicity of the test material to the rabbit. The test substance was evaluated in 10 rabbits. A dose of 5000 mg/kg test substance (undiluted), was applied for 24 hours. Skin observations were made 24 hours after patch removal and then daily for 14 days for signs of toxicity, pharmacological effects and mortality. No mortalities were observed. Very slight to well defined erythema and moderate edema were noted at 24 hours in all animals.

2. Eq. to OECD 404, 1972: Read-Across SOURCE (undec-9-enal): The non-GLP study was completed under a guideline similar to OECD 404, to assess the irritancy potential of the test material to the skin of the albino rabbit. The test substance was evaluated in 3 rabbits. A dose of 0.5 ml test substance (0.5% test item in SDA 39 C vehicle) was applied to intact and abraded clipped dorsal skin site under a occlusive dressing for 24 hours. Skin observations were made 24 and 72 hours after patch removal. No erythema and edema responses were noted at 24 or 72 hours in both intact and abraded skin. Under the conditions of the study the test material produced a mean primary irritation index (PII) of 0 and is considered to be non-irritating to skin.

Weight of Evidence: Since there was a clear demonstration of a mean score greater than or equal to 2.3 in the scoring at 24, 48 and 72hours and/or expected persists to the end of a 14-day observation period (since this was not reported in the dermal toxicity study), the substance based on the weight of evidence can be considered to be irritating or would produce a positive response in a guideline in vivo skin irritation test. Further in vivo testing for skin irritation is unjustified.

 

Eye irritation/corrosion:

1. Eq. to OECD 405, 1963: Read-Across SOURCE (undec-9-enal): The study was performed to assess the irritancy potential of the test material to the eye following a single application in albino white rabbits. The pre-GLP study was completed under a method similar to OECD 405. A volume of 0.1 ml of the test material was placed into one eye of 3 animals. The other eye remained untreated and was used for control purposes. Assessment of ocular damage/irritation was made every 24 hour for 4 days and again on day 7 using scoring based on the Draize scale for scoring occular lesions. Instillation of the test material did not produce any corneal opacity or iris congestion. A diffuse redness of the vessels of the palpebral conjunctivae did occur. This injection was accompanied by a partial eversion of the lids and some discharge. On the seventh day of observation the conjunctivae were normal in all test animals. Under the conditions of this study the test material is considered to be irritating the eyes of albino rabbits.

2. Eq. to OECD 405, 1972: Read-Across SOURCE (undec-9-enal): The study was performed to assess the irritancy potential of the test material to the eye following a single application in albino white rabbits. The pre-GLP study was completed under a method similar to OECD 405. A volume of 0.1 ml of the test material (0.5% in SDA vehicle) was placed into one eye of 3 animals. The other eye remained untreated and was used for control purposes. Assessment of ocular damage/irritation was made every 24 hour for 4 days and again on day 7 using scoring based on the Draize scale for scoring occular lesions. Instillation of the test material did not produce any corneal opacity or iris congestion. A very slight vessel injection was observed on day 1 ad 2 in all three animals. On the seventh day of observation the conjunctivae were normal in all test animals. Under the conditions of this study the test material is not considered to be irritating the eyes of albino rabbits.

Weight of Evidence: Since there was a clear demonstration of a mean redness score greater than or equal to 2 in the available studies, the substance based on the weight of evidence can be considered to be irritating to the eye. There was a complete absence of corneal opacity and iritis reported and expert judgement would indicate that irreversible damage to the eye is not expected or supported based on the available data.

Respiratory irritation:

Key study : INHALATION: OECD TG 403, 2019 : The study was performed according to OECD TG 403, EU Method B.2, US EPA OPPTS 870.1300 and Japanese JMAFF guidelines in accordance with GLP to assess the acute inhalation toxicity of the test item. A single group of ten Wistar: Crl:WI(Han) strain rats (five males and five females) were exposed to an aerosol atmosphere of the test item. The groups were exposed for four hours using a nose only exposure system, followed by a fourteen day observation period. The time-weighted mean achieved atmosphere concentrations were as follows: 5.1 ± 0.1 mg/L based on a nominal concentration of 7.8 mg/L and/or1.1 ± 0.1 mg/Lbased on a nominal concentration of 2.9 mg/L. The atmosphere generation efficiencies were 65% and 39%, respectively. The characteristics of the achieved atmosphere where Mean Mass Median Diameter (particle size): > 2.9 μm and < 3.3 μm with geometric Standard Deviation > 2.0 and < 2.1. At 5 mg/L, all animals were found dead or humanely terminated in moribund condition within 3 hours after the 4-hours exposure. At 1 mg/L, one male was found dead on Day 4, and one male and two females were sacrificed in moribund condition on Day 7. No further mortality occurred. At 5 mg/L, slow breathing, shallow breathing, difficult breathing and gasping was seen during exposure. After exposure, lethargy, flat and/or hunched posture, laboured respiration and ptosis were seen prior to mortality. At 1 mg/L, slow breathing was seen for all males/females during exposure. After exposure, lethargy, hunched posture, slow breathing and/or laboured respiration, were seen on Days 1 and/or 2. There was reoccurrence of the signs in one female and one male humanely terminated on Day 7. For one surviving male and one surviving female from Day 7 onwards, in addition quick breathing, rales and/or piloerection were noted. The survivors had recovered from the clinical signs by Day 13 or 14. Body weight loss was noted for all males/females, at 1 mg/L, which continued until Day 4, 7 or 8 for the majority which regained weight during the second week. One male showed weight loss until the end of the observation period. At 5 mg/L, macroscopic post mortem examination revealed abnormalities of the lungs (reddish discolouration), esophagus (grey-white foamy contents) and/or thymus (many/isolated dark red or reddish foci) for eight out of ten male/females in mortality or were humanely terminated in moribund condition during the study. At 1 mg/L, macroscopic post mortem examination of the males in mortality or were humanely terminated during the study revealed abnormalities of the lungs (reddish discolouration), thymus (many dark red foci) or testis (reduced size left side, isolated to one male). Macroscopic examination of the females that were sacrificed in moribund condition during the study revealed no abnormalities. Macroscopic examination of the surviving animals revealed not collapsed lungs and/or several/many reddish foci of the thymus for two males and one female. No further abnormalities were noted. Under the conditions of this study, the inhalation 4h-LC50 (male/female) was considered to be > 1 and ≤ 5 mg/L within the Wistar: Crl:WI(Han) rat.

 

Weight of Evidence: Under the conditions of this study, there were indications of respiratory irritation. However, the substance is classified under GHS Acute Inhalation Toxicity: Category 4. Therefore GHS STOT-SE : category 3 : respiratory irritation should not apply as the effects reported were not present in the absence of mortality (i.e. “specific non-lethal target organ toxicity”). The effects are therefore a covered within the numerical classification criteria for Acute Inhalation Toxicity. This is to not apply classification twice for the same effect according to the GHS and CLP Regulation (EC) 1272/2008 criteria and incorporating associated guidance.

 

References:

1. OECD TG 436 (2009)

2. OECD 39 (2009)

3. ECHA Guidance on Application on the CLP Criteria, (v5.0, July 2017)

Justification for classification or non-classification

The substance meets the classification criteria under Regulation (EC) No 1272/2008 for skin irritation category 2 : H315

The substance meets classification criteria under Regulation (EC) No 1272/2008 for eye irritation category 2: H319

 

For skin irritation, the weight of evidence indicates that the substance has the potential to be irritating and sufficient for classification purposes. In vivo data on a structural analogue(s) (constituent substances) indicates negative irritation in an in vivo dermal irritation study (but this has limited reliability as it was completed in a vehicle and dilution). An available in vivo acute dermal toxicity study on a structural analogue constituent at the limit dose of 5000 mg/kg bw demonstrated positive local responses and which are for a constituent above the generic cut-off within Regulation (EC) 1272/2008. Expert judgement indicates that the substance can be expected to generate a positive irritation response adequate for classification.

 

For eye irritation, the weight of evidence indicates that the substance has the potential to cause transient irritating effects to the eye sufficient for classification based on the applicants recalculation of the mean scoring within available in vivo data on structural analogue(s) (constituent substances) and evaluation of the results in three organisms demonstrating that the EU criteria had been met specifically within conjunctival redness criteria only. Effects in vivo on corneal opacity and iritis are non-existent or very low; the substance is of demonstrated low order of acute toxicity and further; based on skin irritation studies an absence of serious effects by the dermal route – the overall evidence is indicative of transient and reversible effects on the eye.

For respiratory irritation: the weight of evidence indicates, there were indications of respiratory irritation. However, the substance is classified under GHS Acute Inhalation Toxicity: Category 4. Therefore GHS STOT-SE : category 3 : respiratory irritation should not apply as the effects reported were not present in the absence of mortality (i.e. “specific non-lethal target organ toxicity”). The effects are therefore a covered within the numerical classification criteria for Acute Inhalation Toxicity. This is to not apply classification twice for the same effect according to the GHS and CLP Regulation (EC) 1272/2008 criteria and incorporating associated guidance.

 

References:

1. ECHA Guidance on Application on the CLP Criteria, (v5.0, July 2017)