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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
skin irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
before 1993-10-28
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
other: information granted by ECHA on substance registered before more than 12 years
Title:
Unnamed

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion)
Deviations:
not specified
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
413-920-6
EC Name:
-
Cas Number:
88949-33-1
Molecular formula:
C30H20N2O2
IUPAC Name:
3,6-bis({[1,1'-biphenyl]-4-yl})-1H,2H,4H,5H-pyrrolo[3,4-c]pyrrole-1,4-dione

Test animals

Species:
rabbit
Strain:
New Zealand White

Test system

Type of coverage:
semiocclusive
Preparation of test site:
not specified
Vehicle:
water
Amount / concentration applied:
500 mg
Duration of treatment / exposure:
4 h
Observation period:
72 h
Number of animals:
3

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
edema score
Basis:
animal #1
Time point:
other: 24, 48, 72 h
Score:
0
Irritation parameter:
edema score
Basis:
animal #2
Time point:
other: 24, 48, 72 h
Score:
0
Irritation parameter:
edema score
Basis:
animal #3
Time point:
other: 24, 48, 72 h
Score:
0
Irritation parameter:
erythema score
Basis:
animal: 1, 2, 3
Remarks on result:
other: Red staining of the skin made scoring of erythema impossible.
Other effects:
No abnormalities were observed.

Any other information on results incl. tables

Red staining of the skin made scoring of ertyhema impossible.

Applicant's summary and conclusion

Interpretation of results:
not irritating
Remarks:
Migrated informationCriteria used for interpretation of results: EU