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Toxicological information

Skin irritation / corrosion

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Administrative data

Endpoint:
skin irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
7 days in January 1977
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1977
Report date:
1977

Materials and methods

Test guidelineopen allclose all
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
Qualifier:
according to guideline
Guideline:
other: ETAD guideline
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Disodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-4-hydroxy-5-nitrobenzenesulphonato(3-)][2-[(2-hydroxybenzylidene)amino]-4-nitrophenolato(2-)-N2,O1,O2]chromate(2-)
EC Number:
280-676-3
EC Name:
Disodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-4-hydroxy-5-nitrobenzenesulphonato(3-)][2-[(2-hydroxybenzylidene)amino]-4-nitrophenolato(2-)-N2,O1,O2]chromate(2-)
Cas Number:
83733-23-7
Molecular formula:
C29H18CrN7O11S.2Na
IUPAC Name:
disodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-4-hydroxy-5-nitrobenzenesulphonato(3-)][2-[(2-hydroxybenzylidene)amino]-4-nitrophenolato(2-)-N2,O1,O2]chromate(2-)
Test material form:
solid: particulate/powder

Test animals

Species:
rabbit
Strain:
New Zealand White
Remarks:
HC:NZW
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Source: Hacking & Churchill Ltd., Huntingdon, UK
- Weight at study initiation: 3-4kg
- Housing: individually in cages
- Diet (e.g. ad libitum): standard ssniff (R) K4 ad libitum
- Water (e.g. ad libitum): tap water ad libitum

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 19 - 25°C
- Humidity (%): 40 - 60%
- Photoperiod (hrs dark / hrs light): 12h/12h

Test system

Type of coverage:
semiocclusive
Preparation of test site:
shaved
Vehicle:
water
Controls:
yes, concurrent no treatment
Amount / concentration applied:
TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 500 mg
Duration of treatment / exposure:
24 h
Observation period:
7 days
Number of animals:
2
Details on study design:
SCORING SYSTEM: Draize

REMOVAL OF TEST SUBSTANCE
- Washing (if done): yes (water, soap, oil)
- Time after start of exposure: 24 h

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
erythema score
Basis:
mean
Time point:
24/48/72 h
Score:
0
Max. score:
4
Remarks on result:
no indication of irritation
Irritation parameter:
edema score
Basis:
mean
Time point:
24/48/72 h
Score:
0
Max. score:
4
Remarks on result:
no indication of irritation

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
No signs of irritation related to the substance were observed on rabbit skin. The substance is not classifiable according to CLP criteria.