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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 vitro gene mutation study in bacteria
Remarks:
Type of genotoxicity: gene mutation
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: study performed according to OECD and GLP guidelines
Cross-reference
Reason / purpose for cross-reference:
reference to same study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1997
Report date:
1997

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 471 (Bacterial Reverse Mutation Assay)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of assay:
bacterial reverse mutation assay

Test material

Constituent 1
Chemical structure
Reference substance name:
6,8-dimethylnona-3,5-dien-2-one
EC Number:
274-446-1
EC Name:
6,8-dimethylnona-3,5-dien-2-one
Cas Number:
70214-76-5
Molecular formula:
C11H18O
IUPAC Name:
6,8-dimethylnona-3,5-dien-2-one

Method

Target gene:
TA1535 hisG46
TA97 hisD66100
TA98 hisD3052
TA100 hisG46
TA102 hisG428
Species / strain
Species / strain / cell type:
S. typhimurium, other: TA1535, TA97, TA98, TA100, and TA102
Additional strain / cell type characteristics:
other: rfa, delta-uvrB, pKM101
Metabolic activation:
with and without
Metabolic activation system:
S9
Test concentrations with justification for top dose:
333 and 1000 ug /plate
Controls
Untreated negative controls:
yes
Negative solvent / vehicle controls:
yes
True negative controls:
yes
Positive controls:
yes
Positive control substance:
2-nitrofluorene
sodium azide

Results and discussion

Test results
Species / strain:
S. typhimurium, other:
Metabolic activation:
with and without
Genotoxicity:
negative
Cytotoxicity / choice of top concentrations:
no cytotoxicity
Vehicle controls validity:
valid
Untreated negative controls validity:
valid
Positive controls validity:
valid
Remarks on result:
other: all strains/cell types tested
Remarks:
Migrated from field 'Test system'.

Any other information on results incl. tables

-

Applicant's summary and conclusion

Conclusions:
Interpretation of results (migrated information):
negative

It is therefore concluded that neither Dimethylnonadienon per se, nor
any of the metabolites formed under the described experimental conditions is
mutagenic in the Ames test.