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EC number: 224-748-4 | CAS number: 4474-24-2
Skin irritation / corrosion
Administrative data
- Endpoint:
- skin irritation: in vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1973
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 973
- Report date:
- 1973
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: "Appraisal of the Safety of Chemicals in Foods, Drugs and Cosmetics" (1959) of the US Association of Food and Drug Officials (AFDO)
- Principles of method if other than guideline:
- patch test
- GLP compliance:
- no
Test material
- Reference substance name:
- Sodium 3,3'-(9,10-dioxoanthracene-1,4-diyldiimino)bis(2,4,6-trimethylbenzenesulphonate)
- EC Number:
- 224-748-4
- EC Name:
- Sodium 3,3'-(9,10-dioxoanthracene-1,4-diyldiimino)bis(2,4,6-trimethylbenzenesulphonate)
- Cas Number:
- 4474-24-2
- Molecular formula:
- C32H30N2O8S2.2Na
- IUPAC Name:
- disodium 3,3'-[(9,10-dioxo-9,10-dihydroanthracene-1,4-diyl)diimino]bis(2,4,6-trimethylbenzenesulfonate)
- Test material form:
- not specified
Constituent 1
Test animals
- Species:
- rabbit
- Strain:
- other: Russian
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Weight at study initiation: 1.4-1.7 kg
- Housing: singly in metal cages (overall dimensions 47x32x34 cm)
- Diet: Standard diet of Nafag ad libitum
- Water: drinking water ad libitum
- Acclimation period: at least 8 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 18±1
- Humidity (%): 55±5
- Photoperiod (hrs dark / hrs light): 14 hours light
Test system
- Type of coverage:
- occlusive
- Preparation of test site:
- other: right shaved; left shaved and scarified
- Vehicle:
- water
- Controls:
- yes, concurrent no treatment
- Amount / concentration applied:
- TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.5g
VEHICLE
- Amount(s) applied (volume or weight with unit): wetted with tap water - Duration of treatment / exposure:
- 24 h
- Observation period:
- 8 days
- Number of animals:
- 6 (3 male and 3 female)
- Details on study design:
- TEST SITE
- Area of exposure: 2 sites of 2.5 x 2.5 cm
- Type of wrap if used: impermeable foil of 5 x 5 cm, which was fixed to the body of the animals with adhesive tape
REMOVAL OF TEST SUBSTANCE
- Washing (if done): No
- Time after start of exposure: 24 hours
SCORING SYSTEM: Draize
Results and discussion
In vivo
Resultsopen allclose all
- Irritation parameter:
- erythema score
- Basis:
- animal: 188, 189, 190, 191, 192
- Time point:
- other: mean score following grading at 24, 48, 72 hours
- Score:
- ca. 0
- Max. score:
- 0
- Reversibility:
- other: no symptoms
- Remarks on result:
- other: intact skin
- Irritation parameter:
- erythema score
- Basis:
- animal: 187
- Time point:
- other: mean score following grading at 24, 48, 72 hours
- Score:
- ca. 1.66
- Max. score:
- 2
- Reversibility:
- fully reversible within: 6 days
- Remarks on result:
- other: intact skin
- Irritation parameter:
- edema score
- Basis:
- animal: 188, 189, 190, 191, 192
- Time point:
- other: mean score following grading at 24, 48, 72 hours
- Score:
- ca. 0
- Max. score:
- 0
- Reversibility:
- other: no symptoms
- Remarks on result:
- other: intact skin
- Irritation parameter:
- edema score
- Basis:
- animal: 187
- Time point:
- other: mean score following grading at 24, 48, 72 hours
- Score:
- ca. 0.66
- Max. score:
- 1
- Reversibility:
- fully reversible within: 72 hours
- Remarks on result:
- other: intact skin
Applicant's summary and conclusion
- Interpretation of results:
- other: CLP criteria not met
- Conclusions:
- Non irritant
- Executive summary:
Method
The Skin irritation was determined in an irritation test on rabbits according to the "Appraisal of the Safety of Chemicals in Foods, Drugs and Cosmetics" (1959) of the US Association of Food and Drug Officials (AFDO)", similar to the OECD Guideline 404.
Result
Non irritant.
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