Registration Dossier
Registration Dossier
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EC number: 252-722-2 | CAS number: 35773-43-4
Skin irritation / corrosion
Administrative data
- Endpoint:
- skin irritation: in vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Mar 1976
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 989
- Report date:
- 1989
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
- Deviations:
- yes
- Remarks:
- 2 animals instead of 3
- GLP compliance:
- no
Test material
- Reference substance name:
- 3-(5-chlorobenzoxazol-2-yl)-7-(diethylamino)-2-benzopyrone
- EC Number:
- 252-722-2
- EC Name:
- 3-(5-chlorobenzoxazol-2-yl)-7-(diethylamino)-2-benzopyrone
- Cas Number:
- 35773-43-4
- Molecular formula:
- C20H17ClN2O3
- IUPAC Name:
- 3-(5-chloro-1,3-benzoxazol-2-yl)-7-(diethylamino)-2H-chromen-2-one
- Test material form:
- solid: particulate/powder
- Details on test material:
- Disperse Yellow 184:1
Constituent 1
Test animals
- Species:
- rabbit
- Strain:
- New Zealand White
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Interfauna UK Ltd., Huntingdon, UK
- Housing: polyethylene cages
- Diet (e.g. ad libitum): "Ssniff K 4" , Ssniff Spezialdiaten GmbH, Soer - approx. 100 - 120 g per animal and day; feeding once per day in the morning
- Water (e.g. ad libitum): ad lib.
- Acclimation period: at least 14 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 17 - 23
- Humidity (%): approx. 50
- Air changes (per hr): 10
- Photoperiod (hrs dark / hrs light): 12/12
Test system
- Type of coverage:
- semiocclusive
- Preparation of test site:
- not specified
- Vehicle:
- other: powder slightly moistened with oil
- Controls:
- yes, concurrent no treatment
- Amount / concentration applied:
- 0.5 g
- Duration of treatment / exposure:
- 24 h
- Observation period:
- 72 h or longer if needed
- Number of animals:
- 2
- Details on study design:
- TEST SITE
- Area of exposure: ear (inner side)
- Type of wrap if used: hypoallergenic patch
REMOVAL OF TEST SUBSTANCE
- Washing (if done): tap water / soap
- Time after start of exposure: 24 h
OBSERVATION TIME POINTS
24 and 48 h and 7 d (if needed) after removal
SCORING SYSTEM:
- Method of calculation: Draize system
Results and discussion
In vivo
Resultsopen allclose all
- Irritation parameter:
- edema score
- Basis:
- mean
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 4
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- erythema score
- Basis:
- mean
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 4
- Remarks on result:
- no indication of irritation
- Irritant / corrosive response data:
- No corrosive effects were noted on treated skin at any time.
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- The test item did not cause any signs of irritation/corrosion on rabbit skin. The substance is not classifiable according to the CLP Regulation.
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