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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 471 (Bacterial Reverse Mutation Assay)
Qualifier:
according to guideline
Guideline:
EU Method B.13/14 (Mutagenicity - Reverse Mutation Test Using Bacteria)
GLP compliance:
yes
Type of assay:
bacterial reverse mutation assay

Test material

Constituent 1
Chemical structure
Reference substance name:
Thuj-4(10)-ene
EC Number:
222-212-4
EC Name:
Thuj-4(10)-ene
Cas Number:
3387-41-5
Molecular formula:
C10H16
IUPAC Name:
4-methylidene-1-(propan-2-yl)bicyclo[3.1.0]hexane

Method

Species / strain
Species / strain / cell type:
other: Salmonella typhimurium (TA97a, TA98, TA100, TA102 and TA1535)
Metabolic activation:
with and without
Controls
Untreated negative controls:
no
Negative solvent / vehicle controls:
yes
True negative controls:
no
Positive controls:
yes
Positive control substance:
sodium azide
benzo(a)pyrene
other: 4-Nitro-1.2-phenylene Diamine,2-Amino-Anthracene

Results and discussion

Test resultsopen allclose all
Key result
Species / strain:
other: TA97a
Metabolic activation:
with and without
Genotoxicity:
positive
Cytotoxicity / choice of top concentrations:
cytotoxicity
Vehicle controls validity:
not valid
Untreated negative controls validity:
not valid
Positive controls validity:
valid
Key result
Species / strain:
S. typhimurium TA 100
Metabolic activation:
with and without
Genotoxicity:
positive
Cytotoxicity / choice of top concentrations:
cytotoxicity
Vehicle controls validity:
not valid
Untreated negative controls validity:
not valid
Positive controls validity:
valid

Applicant's summary and conclusion

Conclusions:
Based on the results of this study it is concluded that Thuj-4(10)-ene is mutagenic in the Salmonella typhimurium strain TA1535 in the absence and presence of metabolic activation under the experimental conditions in this study.