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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: test procedure meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1975
Report date:
1975

Materials and methods

Principles of method if other than guideline:
According to ETAD-Subkomitee für Toxikologie 'Empfohlene Methoden zur toxikologischen Untersuchung von Farbstoffen und Hilfsmitteln'.
Treatment of 3 rabbits on the inner side of the ear for 24 hours under occlusive conditions.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
4,4',4''-methylidynetrianiline
EC Number:
208-952-0
EC Name:
4,4',4''-methylidynetrianiline
Cas Number:
548-61-8
Molecular formula:
C19H19N3
IUPAC Name:
4,4',4''-methylidynetrianiline

Test animals

Species:
rabbit
Strain:
New Zealand White

Test system

Type of coverage:
occlusive
Preparation of test site:
not specified
Vehicle:
unchanged (no vehicle)
Controls:
not required
Amount / concentration applied:
TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 500 mg
Duration of treatment / exposure:
24 h
Observation period:
directly after treatment and 48h thereafter
Number of animals:
3
Details on study design:
TEST SITE
- Area of exposure: inner side of the ear
- Type of wrap if used: no details given

Results and discussion

In vivo

Results
Irritation parameter:
overall irritation score
Basis:
mean
Time point:
other: 0h and 48h
Score:
0

Any other information on results incl. tables

No skin reaction was observed.

Applicant's summary and conclusion

Interpretation of results:
not irritating
Remarks:
Migrated information
Executive summary:

In a skin irritation study the test material was applied to the inner side of the ear of 3 white rabbits under occlusive conditions. No signs of skin irritation became obvious directly after treatment and 48 hours thereafter. Thus, the test material did not cause skin irritation under the protocol used. According to EU Regulation 1272/2008 no classification for skin irritation is warranted.