1,2-Naphtoquinonediazide-5-sulfonylchloride (or sulfonic acid) esters with 4,6-bis(1-(4-hydroxyphenyl)-1-methylethyl)-1,3-dihydroxybenzene

Endpoint summary

Description of key information

Invivo studies are available for skin and eye irritation.

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

Study period:

Start: 1999-12-28 End: 1999-12-31

Reliability:

1 (reliable without restriction)

Qualifier:

according to guideline

Guideline:

OECD Guideline 404 (Acute Dermal Irritation / Corrosion)

Version / remarks:

1992

GLP compliance:

yes

Species:

rabbit

Strain:

New Zealand White

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Charles River UK, Margate, Kent, England
- Age at study initiation: 7-8 weeks
- Weight at study initiation: 1448, 1351, 1591 gram respectively
- Housing: individually housed in labelled cages with perforated floors (Scanbur, Denmark)
- Diet: standard laboratory rabbit diet (Charles River Breeding and Maintenance Diet for Rabbits, Altromin, Germany) approx. 100 g per day.
- Water: ad libitum, tap water
- Acclimation period: at least 5 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 21
- Humidity (%): 30-70
- Air changes (per hr): 15
- Photoperiod (hrs dark / hrs light): 12/12

Type of coverage:

semiocclusive

Preparation of test site:

clipped

Vehicle:

other: Ethanol

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.5g
- Concentration (if solution): 0.5g/mL Ethanol

VEHICLE
- Amount(s) applied (volume or weight with unit): 1 mL
- Concentration (if solution): 0.5 gram of substance moistened with 1 mL of vehicle

Duration of treatment / exposure:

4h

Observation period:

72 hours

Number of animals:

3

Details on study design:

TEST SITE
- Area of exposure: 2x3cm
- Type of wrap if used: wrapped around the abdomen and secured with Coban elastic bandage

REMOVAL OF TEST SUBSTANCE
- Washing (if done): skin cleaned of residual test substance using water and ethanol.
- Time after start of exposure: 4 hours

OBSERVATION TIME POINTS
- 1, 24, 48 and 72 hours

SCORING SYSTEM:
- Method of calculation: Draize

Irritation parameter:

erythema score

Basis:

animal #1

Time point:

24/48/72 h

Score:

0

Irritation parameter:

erythema score

Basis:

animal #2

Time point:

24/48/72 h

Score:

0

Irritation parameter:

erythema score

Basis:

animal #3

Time point:

24/48/72 h

Score:

0

Irritation parameter:

edema score

Basis:

animal #1

Time point:

24/48/72 h

Score:

0

Irritation parameter:

edema score

Basis:

animal #2

Time point:

24/48/72 h

Score:

0

Irritation parameter:

edema score

Basis:

animal #3

Time point:

24/48/72 h

Score:

0

Interpretation of results:

GHS criteria not met

Executive summary:

Three rabbits were exposed to 0.5 gram of the test substance, applied onto clipped skin for 4 hours using a semi-occlusive dressing. Observations were made 1, 24, 48 and 72 hours after exposure.

No skin irritation was observed after 4 hours exposure to the test substance. In two animals, scoring for erythema was impossible after 1 hour due to orange/yellow staining of the skin by the test substance. Orange/yellow staining of the treated skin by the test substance was noted throughout the study period.

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

Study period:

Start: 2000-01-10 End: 2000-01-13

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 405 (Acute Eye Irritation / Corrosion)

Version / remarks:

1987

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: Charles River UK, Margate, Kent, England
- Age at study initiation: 9 weeks
- Weight at study initiation: 1422, 1902, 1863 gram respectively
- Housing: individually housed in labelled cages with perforated floors (Scanbur, Denmark)
- Diet: standard laboratory rabbit diet (Charles River Breeding and Maintenance Diet for Rabbits, Altromin, Germany) approx. 100 g per day.
- Water: ad libitum, tap water
- Acclimation period: at least 5 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 21
- Humidity (%): 30-70
- Air changes (per hr): 15
- Photoperiod (hrs dark / hrs light): 12/12

Vehicle:

unchanged (no vehicle)

Controls:

yes

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied: 26 mg

Observation period (in vivo):

72 h

Number of animals or in vitro replicates:

3

Irritation parameter:

cornea opacity score

Basis:

animal #1

Time point:

24/48/72 h

Score:

0

Irritation parameter:

cornea opacity score

Basis:

animal #2

Time point:

24/48/72 h

Score:

0

Irritation parameter:

cornea opacity score

Basis:

animal #3

Time point:

24/48/72 h

Score:

0

Irritation parameter:

iris score

Basis:

animal #1

Time point:

24/48/72 h

Score:

0

Irritation parameter:

iris score

Basis:

animal #2

Time point:

24/48/72 h

Score:

0

Irritation parameter:

iris score

Basis:

animal #3

Time point:

24/48/72 h

Score:

0

Irritation parameter:

conjunctivae score

Basis:

animal #1

Time point:

24 h

Score:

1

Reversibility:

fully reversible

Irritation parameter:

conjunctivae score

Basis:

animal #1

Time point:

48 h

Score:

0

Irritation parameter:

conjunctivae score

Basis:

animal #1

Time point:

72 h

Score:

0

Irritation parameter:

conjunctivae score

Basis:

animal #2

Time point:

24/48/72 h

Score:

0

Irritation parameter:

conjunctivae score

Basis:

animal #3

Time point:

24 h

Score:

1

Reversibility:

fully reversible

Irritation parameter:

conjunctivae score

Basis:

animal #3

Time point:

48 h

Score:

0

Irritation parameter:

conjunctivae score

Basis:

animal #3

Time point:

72 h

Score:

0

Irritation parameter:

chemosis score

Basis:

animal #1

Time point:

24/48/72 h

Score:

0

Irritation parameter:

chemosis score

Basis:

animal #2

Time point:

24/48/72 h

Score:

0

Irritation parameter:

chemosis score

Basis:

animal #3

Time point:

24/48/72 h

Score:

0

Executive summary:

Single samples of approximately 26 mg of test substance (a volume of approximately 0.1 ml) were instilled into one eye of each of 3 rabbits. Observations were made 1, 24, 48 and 72 hours after instillation.

Instillation of the test substance resulted in effects on the iris and conjunctivae. Irridial irritation (grade 1) was observed in one animal after 1 hour only. Irritation of the conjunctivae was seen as redness, chemosis and discharge, which had completely resolved within 24 hours in one animal and within 48 hours in the other 2 animals.

Yellow staining of the fur on the head and paws, caused by the test substance, was noted during the observation period. Remnants of the test substance were present in the eyes of all animals on day 1.

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed (not irritating)

Respiratory irritation

Endpoint conclusion

Endpoint conclusion:

no study available

Justification for classification or non-classification

In vivo studies are available for skin and eye irritation. Skin irritation was not observed. Very slight eye irritation was observed but the response does not fulfil the criteria for a Cat. 2 classification. The observed effects were also fully reversible.