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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
toxicity to reproduction: other studies
Type of information:
other: publication
Adequacy of study:
supporting study
Study period:
1990
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
other: no guideline followed

Data source

Reference
Reference Type:
publication
Title:
Unnamed
Year:
1990

Materials and methods

Test guideline
Qualifier:
no guideline followed
Guideline:
other: not applicable
Deviations:
not specified
GLP compliance:
not specified
Type of method:
in vivo

Test material

Constituent 1
Chemical structure
Reference substance name:
3-methylpyrazole
EC Number:
215-925-7
EC Name:
3-methylpyrazole
Cas Number:
1453-58-3
Molecular formula:
C4H6N2
IUPAC Name:
3-methyl-1H-pyrazole
Test material form:
other: liquid

Test animals

Species:
rat
Sex:
female

Results and discussion

Effect levels

Dose descriptor:
NOAEL
Basis for effect level:
other: no NOAEL identified
Remarks on result:
not determinable
Remarks:
no NOAEL identified

Observed effects

At doses of 20, 40, 80 and 180 mg/kg bw no maternal toxicity was observed. At 80 mg/kg bw urogenital syndrom (uni- and bilateral renal agenesis, hydronephrosis, incomlete formation of uterus) occured. No embryotoxicity was noted.
At 160 mg/kg postnatal viability and live-birth indices were decreased.

Applicant's summary and conclusion

Conclusions:
At doses of 20, 40, 80 and 180 mg/kg bw no maternal toxicity was observed. At 80 mg/kg bw urogenital syndrom (uni- and bilateral renal agenesis, hydronephrosis, incomlete formation of uterus) occured. No embryotoxicity was noted.
At 160 mg/kg postnatal viability and live-birth indices were decreased.