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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
in vivo mammalian somatic cell study: cytogenicity / erythrocyte micronucleus
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 474 (Mammalian Erythrocyte Micronucleus Test)
GLP compliance:
yes
Type of assay:
other: Bone Marrow Erythrocytes Micronucleus Test

Test material

Constituent 1
Test material form:
liquid

Test animals

Species:
rat
Strain:
Sprague-Dawley
Sex:
female

Administration / exposure

Route of administration:
oral: gavage
Vehicle:
The 80% PEG 400 vehicle was prepared.
Duration of treatment / exposure:
Day 1-Day 3
Frequency of treatment:
Dosing day (Day 1): one time (approximately 1 hour after dosing)
Dosing day (Day 2): Three times (approximately 1, 3 and 5 hours after dosing) and once in spare animals
Non-dosing days (Day 3): one time
Doses / concentrationsopen allclose all
Dose / conc.:
500 mg/kg bw (total dose)
Dose / conc.:
1 000 mg/kg bw (total dose)
Dose / conc.:
2 000 mg/kg bw (total dose)
No. of animals per sex per dose:
5
Control animals:
yes
Positive control(s):
Cyclophosphamide monohydrate (CPA)

Results and discussion

Test results
Key result
Sex:
female
Genotoxicity:
negative
Toxicity:
no effects
Vehicle controls validity:
valid
Negative controls validity:
valid
Positive controls validity:
valid

Applicant's summary and conclusion