3-Pyridinemethanesulfonic acid, 5-[2-[5-[[4-chloro-6-[(4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]diazenyl]-1-ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-, potassium sodium salt (1:?:?)

Endpoint summary

Description of key information

The test substance was found to be not irritating or corrosive to the skin and the eye.

Key value for chemical safety assessment

Skin irritation / corrosion

Link to relevant study records

Reference

Endpoint:

skin irritation: in vivo

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP compliant guideline study, available as unpublished report, no restrictions, fully adequate for assessment.

Qualifier:

according to guideline

Guideline:

OECD Guideline 404 (Acute Dermal Irritation / Corrosion)

Qualifier:

according to guideline

Guideline:

EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion)

GLP compliance:

yes

Species:

rabbit

Strain:

New Zealand White

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Kleintierfarm Madoerin AG, CH 4414, Fuellinsdorf, Switzerland
- Age at study initiation: 14-15 weeks
- Weight at study initiation: 3.0-3.2kg
- Housing: Individually in stainless steel cages equipped with an automatic cleaning and drinking system (Dipl. Ing. W. Ehret GmbH, Versuchstiertechnik, D-7830 Emmendingen / FRG)
- Diet (e.g. ad libitum): Pelleted standard Kliba 341, batch 23/87 rabbit maintenance diet ("Kliba", klingentalmuehle AG, 4303 Kaiseraugst, Switzerland) ad libitum
- Water (e.g. ad libitum): Community tap water from Itingen ad libitum
- Acclimation period: Four days under laboratory conditions after veterinary examination

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20 ± 3
- Humidity (%): 40-70
- Air changes (per hr): 10-15
- Photoperiod (hrs dark / hrs light): 12/12

Type of coverage:

semiocclusive

Preparation of test site:

shaved

Vehicle:

water

Remarks:

The test article was applied moistened with tap water.

Controls:

no

Amount / concentration applied:

0.5g

Duration of treatment / exposure:

4 hours

Observation period:

up to 72 hours

Number of animals:

3; 1 male and 2 females

Details on study design:

Approximately 24 hours before treatment, the dorsal fur was shaved with an electric clipper, exposing an area of approximately 100 square centimeters (10 cm x 10 cm). On test day 1, 0.5 g of the test article was applied to the intact skin of the shaved area. It was covered with a 3.0 cm x 3.0 cm patch of surgical gauze. The gauze was covered with a semi-occlusive dressing. The dressing was wrapped around the abdomen and anchored with an elastic bandage. The duration of treatment was 4 hours. Four hours after the application, the dressing was removed and the skin was flushed with lukewarm tap water. The skin reaction was assessed at 1, 24, 48 and 72 hours intervals after the removal of the dressing, gauze patch and test article.

Irritation parameter:

erythema score

Basis:

mean

Time point:

other: 1, 24, 48, 72 hours

Score:

0

Max. score:

4

Irritation parameter:

edema score

Basis:

mean

Time point:

other: 1, 24, 48, 72 hours

Score:

0

Max. score:

4

Irritation parameter:

primary dermal irritation index (PDII)

Basis:

mean

Time point:

other: average 24, 48, 72 hours

Score:

0

Max. score:

8

Irritant / corrosive response data:

Irritation: FAT 40 279/B showed a primary irritation score of 0.0 when applied to intact rabbit skin. Local signs (mean 1 hour to 72 hours) consisted of grade 0.0 erythema and grade 0.0 edema.
Corrosion: No destructions or irreversible alterations of the treated skin were observed. No corrosive effect was evident on the skin.

Other effects:

Coloration: In the area of application in all animals a slight yellowish discoloration of the treated skin by pigment or coloring of the test article was observed.
Body weights: The body weight gain of all rabbits was similar.
Toxic symptoms/mortality: No acute toxic symptoms were observed in the animals during the test period, and no mortality occurred.

Interpretation of results:

not irritating

Remarks:

Migrated information Criteria used for interpretation of results: EU

Conclusions:

Under the conditions of this experiment, the test substance was found to be not irritating or corrosive.

Executive summary:

In a GLP compliant skin irritation study, performed according to OECD guideline 404, the test substance (moistened, 0.5g) was applied, semi-occlusive, to the skin of three New Zealand White rabbits for 4 hours. After 4 hours, the treated skin was flushed with water and observation were made for an additional 72 hours. A primary irritation score of 0.00 and an erythema and edema score of 0.00 was observed at all time points. No corrosive effect was evident on the skin. Under the conditions of this experiment, the test substance was found to be not irritating or corrosive.

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed (not irritating)

Eye irritation

Link to relevant study records

Reference

Endpoint:

eye irritation: in vivo

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP compliant guideline study, available as unpublished report, no restrictions, fully adequate for assessment.

Qualifier:

according to guideline

Guideline:

OECD Guideline 405 (Acute Eye Irritation / Corrosion)

Qualifier:

according to guideline

Guideline:

EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)

GLP compliance:

yes

Species:

rabbit

Strain:

New Zealand White

Details on test animals or tissues and environmental conditions:

TEST ANIMALS
- Source: Kleintierfarm Madoerin AG, CH 4414, Fuellinsdorf, Switzerland
- Age at study initiation: 14-15 weeks
- Weight at study initiation: 2.8-2.9kg
- Housing: Individually in stainless steel cages equipped with an automatic cleaning and drinking system (Dipl. Ing. W. Ehret GmbH, Versuchstiertechnik, D-7830 Emmendingen / FRG)
- Diet (e.g. ad libitum): Pelleted standard Kliba 341, batch 23/87 rabbit maintenance diet ("Kliba", klingentalmuehle AG, 4303 Kaiseraugst, Switzerland) ad libitum
- Water (e.g. ad libitum): Community tap water from Itingen ad libitum
- Acclimation period: Four days under laboratory conditions after veterinary examination

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20 ± 3
- Humidity (%): 40-70
- Air changes (per hr): 10-15
- Photoperiod (hrs dark / hrs light): 12/12

Vehicle:

unchanged (no vehicle)

Controls:

no

Amount / concentration applied:

0.1 g

Duration of treatment / exposure:

72 hours

Observation period (in vivo):

up to 72 hours

Number of animals or in vitro replicates:

3; 1 male, 2 females

Details on study design:

The eyes of the animals were observed 24 hours prior to test article administration. The test article (0.1 g per animal) was placed in the conjunctival
sac of the left eye of each animal after gently pulling the lower lid away from the eyeball. The lids were then gently held together for about one second to prevent loss of the test article. The right eye remained untreated and served as the reference control. The eyes of each animal were examined 1, 24, 48 and 72 hours after administration. The corrosive properties of the test article and the color of the treated eye were described and recorded.

Irritation parameter:

cornea opacity score

Basis:

mean

Time point:

other: 1, 24, 48, 72 hours

Score:

0

Max. score:

4

Irritation parameter:

iris score

Basis:

mean

Time point:

other: 1, 24, 48, 72 hours

Score:

0

Max. score:

2

Irritation parameter:

conjunctivae score

Basis:

mean

Time point:

other: 1 hours

Score:

1

Max. score:

3

Irritation parameter:

conjunctivae score

Basis:

mean

Time point:

other: 24 hours

Score:

0.67

Max. score:

3

Irritation parameter:

conjunctivae score

Basis:

mean

Time point:

other: 48 and 72 hours

Score:

0

Max. score:

3

Irritation parameter:

chemosis score

Basis:

mean

Time point:

other: 1, 24, 48 and 72 hours

Score:

0

Max. score:

4

Irritation parameter:

other: Primary irritation score

Basis:

mean

Time point:

other: average 1, 24, 48, 72 hours

Score:

0.4

Max. score:

13

Irritant / corrosive response data:

Irritation: FAT 40 279/B showed a primary irritation score of 0.4, when applied to the rabbit eye mucosa.
Corrosion: No corrosion of the cornea was observed at any of the measuring intervals.

Other effects:

Toxic symptoms/mortality: No acute toxic symptoms were observed in the animals during the test period, and no mortality occurred.
Coloration: In the area of application yellow staining of the sclera, nictating membrane and lid hair by pigment or coloring of the test article was observed.
The body weight gain of all rabbits was similar.

Interpretation of results:

not irritating

Remarks:

Migrated information Criteria used for interpretation of results: EU

Conclusions:

Under the conditions of this experiment, the test substance was found to be not irritating or corrosive.

Executive summary:

In a GLP compliant eye irritation study, performed according to OECD guideline 405, the test substance (0.1 g) was placed in the conjunctival sac of the left eye of three New Zealand White rabbits. The eyes were examined for 72 hours. The test substance showed a mean chemosis and conjunctivae score of 1 and 0.67 at 1 and 24 hours, respectively, but 0.00 at the other time points (48 and 72 hours). Cornea and iris scores were 0.00 during the whole observation period. The primary irritation score was 0.4. No corrosion of the cornea was observed at any of the measuring intervals. Under the conditions of this experiment, the test substance was found to be not irritating or corrosive.

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed (not irritating)

Respiratory irritation

Endpoint conclusion

Endpoint conclusion:

no study available

Additional information

Skin irritation:

In a GLP compliant skin irritation study, performed according to OECD guideline 404, the test substance (moistened, 0.5 g) was applied, semi-occlusive, to the skin of three New Zealand White rabbits for 4 hours (RCC 1987). After 4 hours, the treated skin was flushed with water and observation were made for an additional 72 hours. A primary irritation score of 0.00 and anerythema and edema score of 0.00 was observed at all time points. No corrosive effect was evident on the skin. Under the conditions of this experiment, the test substance was found to be not irritating or corrosive.

Eye irritation:

In a GLP compliant eye irritation study, performed according to OECD guideline 405, the test substance (0.1 g) was placed in the conjunctival sac of the left eye of three New Zealand White rabbits (RCC 1987). The eyes were examined for 72 hours. The test substance showed a mean chemosis and conjunctivae score of 1 and 0.67 at 1 and 24 hours, respectively, but 0.00 at the other time points (48 and 72 hours). Cornea and iris scores were 0.00 during the whole observation period. The primary irritation score was 0.4. No corrosion of the cornea was observed at any of the measuring intervals. Under the conditions of this experiment, the test substance was found to be not irritating or corrosive.

Justification for selection of skin irritation / corrosion endpoint:
Only one study available.

Justification for selection of eye irritation endpoint:
Only one study available.

Justification for classification or non-classification

Based on the findings in the skin and eye irritation study the test substance does not need to be classified according to the Directive 67/548/EEC and according to the EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008