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Toxicological information

Genetic toxicity: in vitro

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Administrative data

Endpoint:
in vitro gene mutation study in bacteria
Remarks:
Type of genotoxicity: gene mutation
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study obtained through inquiry process; SNIF file obtained from ECHA.

Data source

Reference
Reference Type:
other: SNIF
Title:
Unnamed
Year:
1997

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method B.13/14 (Mutagenicity - Reverse Mutation Test Using Bacteria)
Deviations:
not specified
GLP compliance:
yes
Type of assay:
bacterial reverse mutation assay

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
not specified

Method

Target gene:
histidine
Species / strain
Species / strain:
S. typhimurium TA 1535, TA 1537, TA 98, TA 100 and E. coli WP2
Additional strain characteristics:
not specified
Metabolic activation:
with and without
Metabolic activation system:
rat livers (S9 fraction)
Test concentrations with justification for top dose:
Concentration range in the main test (with metabolic activation): 33.3 ... 5000 μg/plate
Concentration range in the main test (without metabolic activation): 33.3 ... 5000 μg/plate
Vehicle:
Solvent: DMSO
Details on test system and conditions:
Concentration of the test substance resulting in precipitation: 333 μg/plate

Results and discussion

Test results
Species / strain:
S. typhimurium TA 1535, TA 1537, TA 98, TA 100 and E. coli WP2
Metabolic activation:
with and without
Genotoxicity:
negative
Cytotoxicity:
yes
Remarks:
(> 5000 μg/plate)
Vehicle controls valid:
not specified
Negative controls valid:
not specified
Positive controls valid:
not specified
Remarks on result:
other:
Remarks:
Migrated from field 'Test system'.

Applicant's summary and conclusion

Conclusions:
Interpretation of results (migrated information):
negative with metabolic activation
negative without metabolic activation

The substance was non mutagenic under the conditions of the test.
Executive summary:

The test susbtance was negative in an Ames test (bacterial reverse mutation assay according to EU Method B.13/14, GLP) with and without metabolic activation: No evidence of induction of point mutations in presence or absence of metabolic activation has been observed in S. typhimurium TA 1535, TA 1537, TA 98, TA 100 and E. coli WP2.