Hydrocarbons, C12-C16, n-alkanes, isoalkanes, cyclics, aromatics (2-25%)

Endpoint summary

Description of key information

Acute Toxicity-Oral LD₅₀ > 4150 mg/Kg in rats (OECD TG 401)

Acute Toxicity-Dermal LD₅₀ > 1700 mg//Kg in rabbits (OECD TG 402)

Acute Toxicity-Inhalation LC₅₀ > 13.1 mg/L (13100 mg/m³) (OECD TG 403)

Key value for chemical safety assessment

Acute toxicity: via oral route

Link to relevant study records

Reference

Reference 1

Endpoint:

acute toxicity: oral

Type of information:

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

Adequacy of study:

key study

Study period:

1985/07/11-1985/07/31

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: According to OECD 423 guideline. GLP

Justification for type of information:

Hydrocarbons, C12-C16, n-alkanes, isoalkanes, cyclics, aromatics (2-25%) straddles Hydrocarbons, C9-C14, Aliphatics, (2-25% Aromatics) and Hydrocarbons, C14-C20, Aliphatics (2-30% Aromatics). Read across justification documents have been provided for the same in Section 13 of the dossier. For this substance, a worst case scenario approach has been used for each endpoint.

Reason / purpose for cross-reference:

read-across: supporting information

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)

Deviations:

yes

Remarks:

only one dose tested

GLP compliance:

yes

Test type:

fixed dose procedure

Limit test:

yes

Species:

rat

Strain:

Sprague-Dawley

Sex:

male/female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Sex: Males (10); Females (10)
- Weight at study initiation: Males (130-135 g), Females (110-115 g)
- Housing: individual
- Acclimation period: 6d

Route of administration:

oral: gavage

Vehicle:

unchanged (no vehicle)

Details on oral exposure:

A single dose of BP83HF (5 ml/kg; converted to 4.15 g/kg) was administered by oral gavage. An additional group of 5 males and 5 females were sham - dosed and acted as controls.

Doses:

5 ml/kg (converted to 4.15 g/kg)

No. of animals per sex per dose:

Male (10), Female (10); total animals (20)

Control animals:

yes

Details on study design:

The acute oral toxicity of BP83HF was investigated in a group of 5 male and 5 female CD rats of the Sprague - Dawley strain. Each animal received a single oral dose of 5 ml/kg (converted to 4.15 g/kg) administered by gavage. An additional group of 5 males and 5 females were 'sham - dosed and acted as controls. The condition of all animals was observed over a 14 day period following dosing.

Statistics:

Differences between treated and control group mean values for bodyweight gains were analyzed by Student t-test. When individual variance ratios were significant (P < 0.05), Cochran's approximation was applied (Snedecor and Cochran, 1973) .

Key result

Sex:

male/female

Dose descriptor:

LD50

Effect level:

> 4 150 mg/kg bw

Remarks on result:

other: (converted from 5 mL/kg bw) no mortality noted

Mortality:

No mortality was observed in any of the animals treated with 5 ml/kg (converted to 4.15 g/kg) of BP83HF.

Clinical signs:

other: Transient staining of the urogenital region with test material was observed in all test rats within 24 hours of dosing. Slight flaking of the skin on the feet of these, first noted on Day 7, resolved in most animals prior to termination. During days 0-2,

Gross pathology:

Macroscopic post mortem examination of all animals killed at termination (Day 14) revealed no findings considered to be related to treatment. Although a haemorrhagic focus was seen in the fore-stomach of a female dosed with the test material, this lesion was minimal and was considered to be incidental to treatment with the test material.

Interpretation of results:

other: Not classified

Remarks:

Criteria used for interpretation of results: EU

Conclusions:

The LD50 for BP83HF following oral gavage was >5 ml/kg (converted to 4.15 g/kg). Classification as an oral toxicant is not warranted under the new Regulation (EC) 1272/2008 on classification, labeling and packaging of substances and mixtures (CLP) or under Directive 67/518/EEC for dangerous substances and Directive 1999/45/EC for preparations.

Executive summary:

The acute toxicity of BP83HF was evaluated in rats via oral gavage at a dose of 5 ml/kg bw(converted to 4.15 g/kg). Observations were made as to the nature, onset, severity, and duration of toxicological signs once per day for a total of 14 days. All animals survived the entire observational period and displayed a low incidence of clinical symptoms.  The animals displayed little or no abnormalities. The LD50 for BP83HF following oral gavage was >5 ml/kg (converted to 4.15 g/kg). Classification as an oral toxicant is not warranted under the new Regulation (EC) 1272/2008 on classification, labeling and packaging of substances and mixtures (CLP) or under Directive 67/518/EEC for dangerous substances and Directive 1999/45/EC for preparations.

Reference 2

Endpoint:

acute toxicity: oral

Type of information:

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

Adequacy of study:

key study

Study period:

1977

Reliability:

1 (reliable without restriction)

Justification for type of information:

Hydrocarbons, C12-C16, n-alkanes, isoalkanes, cyclics, aromatics (2-25%) straddles Hydrocarbons, C9-C14, Aliphatics, (2-25% Aromatics) and Hydrocarbons, C14-C20, Aliphatics (2-30% Aromatics). Read across justification documents have been provided for the same in Section 13 of the dossier. For this substance, a worst case scenario approach has been used for each endpoint.

Reason / purpose for cross-reference:

read-across: supporting information

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 401 (Acute Oral Toxicity)

GLP compliance:

not specified

Test type:

fixed dose procedure

Limit test:

yes

Species:

rat

Strain:

Crj: CD(SD)

Sex:

male/female

Route of administration:

oral: gavage

Vehicle:

unchanged (no vehicle)

Doses:

0, 15000 mg/kg

Control animals:

yes

Key result

Sex:

male/female

Dose descriptor:

LD50

Effect level:

> 15 000 mg/kg bw

Mortality:

no mortality noted

Interpretation of results:

other: Not classified

Remarks:

Criteria used for interpretation of results: EU

Conclusions:

The LD50 was > 15000 mg/kg.

Executive summary:

The LD50 was > 15000 mg/kg.

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed

Dose descriptor:

LD50

Value:

4 150 mg/kg bw

Quality of whole database:

Two key read across studies from structural analogues available for assessment.

Acute toxicity: via inhalation route

Link to relevant study records

Reference

Endpoint:

acute toxicity: inhalation

Type of information:

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

Adequacy of study:

key study

Study period:

1977

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Basic data given:comparable to guidelines/standards.

Justification for type of information:

Hydrocarbons, C12-C16, n-alkanes, isoalkanes, cyclics, aromatics (2-25%) straddles Hydrocarbons, C9-C14, Aliphatics, (2-25% Aromatics) and Hydrocarbons, C14-C20, Aliphatics (2-30% Aromatics). Read across justification documents have been provided for the same in Section 13 of the dossier. For this substance, a worst case scenario approach has been used for each endpoint.

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:

OECD Guideline 403 (Acute Inhalation Toxicity)

Deviations:

no

GLP compliance:

not specified

Test type:

acute toxic class method

Limit test:

yes

Species:

rat

Strain:

Crj: CD(SD)

Sex:

male/female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Charles River Ltd., Manston, Kent, UK
- Age at study initiation: 7-8 weeks
- Housing: tubular glass chamber, 2 of each sex
- Diet (e.g. ad libitum): ad libitum, except during 4 hr exposure period
- Water (e.g. ad libitum): ad libitum, except during 4 hr exposure period

Route of administration:

inhalation: vapour

Type of inhalation exposure:

whole body

Vehicle:

other: unchanged (no vehicle)

Details on inhalation exposure:

GENERATION OF TEST ATMOSPHERE / CHAMBER DESCRIPTION
- Exposure apparatus: tubular glass chamber
- System of generating particulates/aerosols: dynamically

TEST ATMOSPHERE
- Brief description of analytical method used: continuously by a high temperature total hydrocarbon analyser

Analytical verification of test atmosphere concentrations:

yes

Duration of exposure:

4 h

Concentrations:

13.1 mg/l (near saturation)

No. of animals per sex per dose:

2

Details on study design:

- Duration of observation period following administration: 14 days

Key result

Sex:

male/female

Dose descriptor:

LC50

Effect level:

> 13.1 mg/L air

Exp. duration:

4 h

Remarks on result:

other: near saturation level

Mortality:

None

Interpretation of results:

study cannot be used for classification

Conclusions:

The LC50 for inhalation toxicity in rats is > 13.1 mg/l, which is near the maximum attainable vapor concentration. The LC50 for the test substance is greater than the saturation concentration.

Executive summary:

This study examined the inhalation toxicity of Dilutine M5 to rats. Two male and two female rats were exposed to test atmosphere containing near saturation concentration of the test substance vapors (13.1 mg/l air) for 4 hrs. After exposure, the rats were observed for the next 14 days for mortality. No rats died during the course of the study. Therefore, the LC50 for the test substance is > 13.1 mg/l air. Since this concentration is near the saturation concentration, the LC50 is greater than the saturation concentration. The test substance is not toxic via inhalation, and is not classified an inhalation toxin under OECD GHS or EU CLP guidelines.

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed

Dose descriptor:

LC50

Value:

13 100 mg/m³ air

Quality of whole database:

One key and one supporting read across study from structural analogues available for assessment.

Acute toxicity: via dermal route

Link to relevant study records

Reference

Reference 1

Endpoint:

acute toxicity: dermal

Type of information:

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

Adequacy of study:

key study

Study period:

1985-07-11 to 1985-07-31

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Acceptable well-documented study report which meets basic scientific principles: GLP

Justification for type of information:

Hydrocarbons, C12-C16, n-alkanes, isoalkanes, cyclics, aromatics (2-25%) straddles Hydrocarbons, C9-C14, Aliphatics, (2-25% Aromatics) and Hydrocarbons, C14-C20, Aliphatics (2-30% Aromatics). Read across justification documents have been provided for the same in Section 13 of the dossier. For this substance, a worst case scenario approach has been used for each endpoint.

Reason / purpose for cross-reference:

read-across: supporting information

Reason / purpose for cross-reference:

reference to other study

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 402 (Acute Dermal Toxicity)

Deviations:

yes

Remarks:

used occlusive wrap

GLP compliance:

yes

Test type:

standard acute method

Limit test:

yes

Species:

rat

Strain:

Sprague-Dawley

Sex:

male/female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Charles Rivers UK Ltd
-Sex: Male (10); Female (10)
- Age at study initiation: 6 weeks
- Weight at study initiation: Male: 125-135g; Female: 110-115g
- Housing: individually housed
- Diet (e.g. ad libitum): No. 1, expanded pelleted maintenance diet for rats and mice from Special Diet Services Ltd., ad libitum
- Water (e.g. ad libitum): ad libitum
- Acclimation period: 6-day acclimatisation


ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22-25
- Humidity (%): 58-90
- Photoperiod (hrs dark / hrs light): 12/12

Type of coverage:

occlusive

Vehicle:

unchanged (no vehicle)

Details on dermal exposure:

On the day prior to application the trunk of each animal was clipped free of hair. For each treated animal, 2 mL/kg of BP83HF was applied to a patch of absorbent paper. The patch was applied to the trunk and held in place beneath a polythene sleeve under a Poroplast bandage. The whole patch assembly was held in place with tape. The patches were left in position for approximately 24 hours. Patches were similarly applied to control animals with the omission of test material. To prevent the animals from gaining access to the sites of application (and hence possibly ingesting traces of test material), collars were applied around the animals heads for a further 24 hours (control and test animals).

Duration of exposure:

24 hours

Doses:

Control: (5) males; (5) female
2 ml/kg (converted 1.7 g/kg): (5) males; (5) females

No. of animals per sex per dose:

Animals: (10) males; (10) female per dose for a total of 20 animals

Control animals:

yes

Details on study design:

SCORING SYSTEM: Draize scale
- Dermal response observations: daily
- Necropsy of survivors performed: yes
- Other examinations performed: clinical signs, body weight

Statistics:

Differences between treated and control group mean values for bodyweight gain were analysed by Student's t-test. Where individual variance ratios were significant (P <0.05 or less), Cochran's approximation was applied (Snedecor and Cochran, Statistical Methods, 6th Ed. Iowa State. 1973). Where zero variance was found in one or more groups, intergroup comparison was performed by the Wilcoxon Rank Sum Test.

Key result

Sex:

male/female

Dose descriptor:

LD50

Effect level:

> 1 700 mg/kg bw

Remarks on result:

other: (dose converted from >2 mL/kg bw)

Mortality:

There were no animal deaths prior to study termination.

Clinical signs:

other: Well-defined erythema was noted upon removal of the test patches in all animals exposed to BP83HF, generally persisting for a further 24 hours. Scab formation was subsequently observed on Day 5 and skin flaking was noted on Day 6 in all treated animals, p

Gross pathology:

Post mortem examination of all animals killed at termination revealed an area of diffuse subcutaneous haemorrhage beneath the dorsal patch site in one male exposed to BP83HF. However, no other findings considered to be related to treatment were observed and no tissues were processed further for histopathological examination.

Other findings:

GROSS POSTMORTEM EXAMINATION

No alterations were noted.

Interpretation of results:

other: Not classified

Remarks:

Criteria used for interpretation of results: EU

Conclusions:

The LD50 of BP83HF was > 2 ml/kg (converted 1.7 g/kg). Classification as an acute dermal toxicant is not warranted under the new Regulation (EC) 1272/2008 on classification, labeling and packaging of substances and mixtures (CLP) or under Directive 67/518/EEC for dangerous substances and Directive 1999/45/EC for preparations.

Executive summary:

Five male and five female rabbits were exposed to BP83HF for 24h via an occluded patch.  Dermal evaluations occurred at 24 hours post patch removal and once daily until the study termination at day14. Exposure had no effect on viability; all animals survived the exposure.  The LD50 of BP83HF was > 2 ml/kg (converted 1.7 g/kg). Classification as an acute dermal toxicant is not warranted under the new Regulation (EC) 1272/2008 on classification, labeling and packaging of substances and mixtures (CLP) or under Directive 67/518/EEC for dangerous substances and Directive 1999/45/EC for preparations.

Reference 2

Endpoint:

acute toxicity: dermal

Type of information:

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

Adequacy of study:

key study

Study period:

1977

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Basic data given:comparable to guidelines/standards.

Justification for type of information:

Hydrocarbons, C12-C16, n-alkanes, isoalkanes, cyclics, aromatics (2-25%) straddles Hydrocarbons, C9-C14, Aliphatics, (2-25% Aromatics) and Hydrocarbons, C14-C20, Aliphatics (2-30% Aromatics). Read across justification documents have been provided for the same in Section 13 of the dossier. For this substance, a worst case scenario approach has been used for each endpoint.

Reason / purpose for cross-reference:

read-across: supporting information

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

other: Noakes, DN, and Sanderson, DM (1969). A method for determining the dermal toxicity of pesticides. Br. J. Industr. Med., 26, 59-64.

GLP compliance:

no

Limit test:

yes

Species:

rat

Strain:

Crj: CD(SD)

Sex:

male/female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Charles River (UK) Ltd, Manston, Kent

Vehicle:

unchanged (no vehicle)

Details on dermal exposure:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 1, 2, or 4 ml/kg

Duration of exposure:

24 hrs

Doses:

1, 2, 4 ml/kg

No. of animals per sex per dose:

2 animals of each sex per dose

Key result

Sex:

male/female

Dose descriptor:

LD50

Effect level:

> 4 mL/kg bw

Mortality:

No animals died during the study.

Mortality

Dose ml/kg	Males	Female	Total
1	0/2	0/2	0/4
2	0/2	0/2	0/4
4	0/2	0/2	0/4

Interpretation of results:

study cannot be used for classification

Conclusions:

The dermal LD50 for rats is > 4 ml/kg (~3400 mg/ kg bw).

Executive summary:

This study examined the acute toxicity of Dilutine M5 to rats via dermal exposure. 2 female and 2 male rats were exposed to 1, 2, or 4 ml/kg of undiluted test material dermally for 24 hrs. No rats died during the experiment. The dermal LD50 for rats is > 4 ml/kg (~3400mg/kg bw).

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed

Dose descriptor:

LD50

Value:

1 700 mg/kg bw

Quality of whole database:

Two key studies from structural analogues available for assessment.

Additional information

Hydrocarbons, C12-C16, n-alkanes, isoalkanes, cyclics, aromatics (2-25%) straddles Hydrocarbons, C9-C14, Aliphatics, (2-25% Aromatics) and Hydrocarbons, C14-C20, Aliphatics (2-30% Aromatics). Read across justification documents have been provided for the same in Section 13 of the dossier. For this substance, a worst case scenario approach has been used for each endpoint.

No acute oral, inhalation, or dermal toxicity data is available for Hydrocarbons, C12-C16, n-alkanes, isoalkanes, cyclics, aromatics (2-25%). However, data is available for structural analogues, Hydrocarbons, C9-C10, n-alkanes, isoalkanes, cyclics, aromatics (2-25%);

Hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, aromatics (2-25%); Hydrocarbons, C11-C20, n-alkanes, isoalkanes, cyclics, aromatics (2 -30%); and C9-C14 aliphatic solvents, 2-25% aromatic. This data is read across to based on analogue read across and a discussion and report on the read across strategy is provided as an attachment in IUCLID Section 13.

Acute Oral Toxicity

Hydrocarbons, C11-C20, n-alkanes, isoalkanes, cyclics, aromatics (2-30%)

In a key study (DHC Solvent Chemie GmbH, 1985), the acute toxicity of the test material (Hydrocarbons, C11-C20, n-alkanes, isoalkanes, cyclics, aromatics (2-30%)) was evaluated in rats via oral gavage at a dose of 5 ml/kg bw (converted to 4.15 g/Kg). Observations were made as to the nature, onset, severity, and duration of toxicological signs once per day for a total of 14 days. All animals survived the entire observational period and displayed a low incidence of clinical symptoms. The animals displayed little or no abnormalities. The LD₅₀for the test material following oral gavage was >5 ml/Kg (converted to 4.15 g/Kg). Classification as an oral toxicant is not warranted under the new Regulation (EC) 1272/2008 on classification, labeling and packaging of substances and mixtures (CLP).

Hydrocarbons, C9-C10, n-alkanes, isoalkanes, cyclics, 2-25% aromatics

In a key acute oral toxicity (ExxonMobil, 1977a), male and female rats were exposed via oral gavage to the hydrocarbons, C9 -C10, n-alkanes, isoalkanes, cyclics, 2-25% aromatics at doses of 0 or 15000 mg/Kg. Based on the lack of effects of mortality observed, the LD₅₀ was determined to be >15000 mg/Kg bw.

Acute Inhalation Toxicity

Hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, 2-25% aromatics

A key acute toxicity study (Shell, 1977a) examined the inhalation toxicity of hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, 2-25% aromatics in rats. Two male and two female rats were exposed to test atmosphere containing near saturation concentration of the test substance vapors (13.1 mg/L air) for 4 hrs. After exposure, the rats were observed for the next 14 days for mortality. No rats died during the course of the study. Therefore, the LC₅₀ for the test substance was determined to be > 13.1 mg/L air. Since this concentration is near the saturation concentration, the LC₅₀ is greater than the saturation concentration. The test substance is not toxic via inhalation, and is not classified an inhalation toxin under OECD GHS or EU CLP guidelines.

C9-C14 aliphatic solvent (2-25% aromatics)

A supporting study (Sasol, 1990) examined the toxicity of a C9-C14 aliphatic solvent (2-25% aromatics) in rats via aerosol inhalation. Five male and five female rats were exposed to aerosol of the test substance for 4 hrs. The test concentration was 1.58 mg/L, the maximum concentration with 25% of particles under 1 micron. Animals were observed for clinical signs and mortality at 0.5, 1.0, 2.5, 4.5, and 6.0 hrs after start of exposure, and daily thereafter for the next 14 days. Body weights were taken on days 0, 7, and 14. All animals were sacrificed on day 14, and gross necropsies performed. Animals exhibited symptoms of piloerection, activity decrease, ptosis, and polyuria beginning at the 1 hr observation, and persisting in some cases to the 6 hr observation. By the day 1 observation, all symptoms had resolved. No mortality was observed during the experiment. The 4-hr LC₅₀ for rats via inhalation of aerosol was determined to be >1.58 mg/L. The test substance is not classified an inhalation toxin under OECD GHS or EU CLP guidelines.

Acute Dermal Toxicity

Hydrocarbons, C11-C20, n-alkanes, isoalkanes, cyclics, aromatics (2-30%)

In a key study (DHC Solvent Chemie GmbH, 1985), five male and five female rabbits were exposed to test material (Hydrocarbons, C11-C20, n-alkanes, isoalkanes, cyclics, aromatics (2-30%)) for 24h via an occluded patch. Dermal evaluations occurred at 24 hours post patch removal and once daily until the study termination at day14. Exposure had no effect on viability; all animals survived the exposure. The LD₅₀of the test material was > 2 ml/Kg (converted 1.7 g/Kg). Classification as an acute dermal toxicant is not warranted under the new Regulation (EC) 1272/2008 on classification, labeling and packaging of substances and mixtures (CLP).

Hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, 2-25% aromatics

A key study (Shell, 1977a) examined the acute toxicity of hydrocarbons, C9-C12, n-alkanes, isoalkanes, cyclics, 2-25% aromatics in rats via dermal exposure. 2 female and 2 male rats were exposed to 1, 2, or 4 mL/Kg of undiluted test material dermally for 24 hrs. No rats died during the experiment. The dermal LD₅₀ for rats was determined to be > 4 mL/Kg (~3400 mg/Kg bw).

Justification for classification or non-classification

Based on the available read across data, Hydrocarbons, C12-C16, n-alkanes, isoalkanes, cyclics, 2-25% aromatics is minimally toxic via ingestion where the LD₅₀ is >4150 mg/Kg, via dermal exposure where the LD₅₀ is >1700 mg/Kg, and by inhalation where the LC₅₀ is >13100 mg/m³. These findings do not warrant classification under the new Regulation (EC) 1272/2008 on classification, labeling and packaging of substances and mixtures (CLP).

Hydrocarbons, C12-C16, n-alkanes, isoalkanes, cyclics, 2-25% aromatics is classified under EU CLP guidelines as a Category 1 aspiration hazard based on its physical and chemical properties (hydrocarbon fluid, viscosity ≤ 20.5 mm²/s).