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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicological information

Genetic toxicity: in vivo

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Administrative data

Endpoint:
in vivo mammalian germ cell study: cytogenicity / chromosome aberration
Remarks:
Type of genotoxicity: chromosome aberration
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: GLP complicance, not OECD guideline

Data source

Reference
Reference Type:
other: inquiry result from ECHA
Title:
Unnamed
Year:
2014

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: 92/69/EWG, B.11 (Säuger-Knochenmark zytogenetischer in vivo-Test, Chromosomenanalyse)
GLP compliance:
yes
Type of assay:
other: in vivo mammalian bone marrow cytogenetic test

Test material

Constituent 1
Chemical structure
Reference substance name:
1-(2-hydroxyethyl)-1H-pyrazol-4,5-diyldiammoniumsulfate
EC Number:
429-300-3
EC Name:
1-(2-hydroxyethyl)-1H-pyrazol-4,5-diyldiammoniumsulfate
Cas Number:
155601-30-2
Molecular formula:
C5H12N4O5S
IUPAC Name:
1-(2-hydroxyethyl)-1H-pyrazol-4,5-diyldiammoniumsulfate

Test animals

Species:
rat
Strain:
Wistar

Administration / exposure

Route of administration:
intraperitoneal
Vehicle:
Aqua dest.
No. of animals per sex per dose:
Male: 100 mg/kg; No. of animals: 5; Sacrifice time: 48 hours
Male: 200 mg/kg; No. of animals: 5; Sacrifice time: 48 hours
Male: 400 mg/kg; No. of animals: 5; Sacrifice time: 48 hours
Female: 150 mg/kg; No. of animals: 5; Sacrifice times: 48 hours
Female: 300 mg/kg; No. of animals: 5; Sacrifice times: 48 hours
Female: 600 mg/kg; No. of animals: 5; Sacrifice times: 48 hours

Results and discussion

Test results
Toxicity:
yes
Remarks:
400 mg/kg b.w.(males), 600 mg/kg b.w. (females) At these dosis toxic symptomes such as reduction of spontaneous activity, eyelid closure (only in females) and apathy occured.
Additional information on results:
Observations:
No statistically significant increase in the frequency of aberrant cells occurred after treatment with the test item as compared to the vehicle control.

Applicant's summary and conclusion

Conclusions:
Interpretation of results (migrated information): negative