Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
eye irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP study according EU/OECD guideline.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2001

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
3-methoxy-4-methyl-4,5-dihydro-1H-1,2,4-triazol-5-one
EC Number:
619-590-1
Cas Number:
135302-13-5
Molecular formula:
C4H7N3O2
IUPAC Name:
3-methoxy-4-methyl-4,5-dihydro-1H-1,2,4-triazol-5-one

Test animals / tissue source

Species:
rabbit
Strain:
Himalayan

Test system

Vehicle:
unchanged (no vehicle)
Controls:
yes, concurrent no treatment
Duration of treatment / exposure:
24h
Observation period (in vivo):
72h
Number of animals or in vitro replicates:
3

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
cornea opacity score
Basis:
mean
Time point:
other: 24-72 hours
Score:
0
Max. score:
0
Irritation parameter:
iris score
Basis:
mean
Time point:
other: 24-72 hours
Score:
0
Max. score:
0
Irritation parameter:
conjunctivae score
Basis:
mean
Time point:
other: 24-72 hours
Score:
0
Max. score:
0
Irritation parameter:
chemosis score
Basis:
mean
Time point:
other: 24-72 hours
Score:
0
Max. score:
0

Applicant's summary and conclusion

Interpretation of results:
not irritating
Remarks:
Migrated information Criteria used for interpretation of results: EU
Conclusions:
The cornea, iris and conjunctivae were not affected by instillation of the test substance.
There were no systemic intolerance reactions.
The test substance was n o n - i r r i t a t i n g to eyes, hence, no labelling is required.