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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

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 with acceptale restrictions

Data source

Reference
Reference Type:
other: ECHA inquiry result
Title:
Unnamed
Year:
2013

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: Annex V (Ames)
GLP compliance:
yes
Type of assay:
bacterial reverse mutation assay

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2'-methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol)
EC Number:
403-800-1
EC Name:
2,2'-methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol)
Cas Number:
103597-45-1
Molecular formula:
C41H50N6O2
IUPAC Name:
2-(2H-1,2,3-benzotriazol-2-yl)-6-{[3-(2H-1,2,3-benzotriazol-2-yl)-2-hydroxy-5-(2,4,4-trimethylpentan-2-yl)phenyl]methyl}-4-(2,4,4-trimethylpentan-2-yl)phenol

Method

Species / strain
Species / strain / cell type:
bacteria, other: Salmonella lyphimurium: TA98,TA100,TA1535,TA1537E,Coil:WP2uvrA
Metabolic activation system:
Aroclor 1254-induced rat liver S9
Test concentrations with justification for top dose:
Concentration range in the main test(with metabolic activation):312.5...5000 ug/plate
Concentration range in the main test(without metabolic activation):312.5...5000 ug/plate
Vehicle / solvent:
Dimethylsulfoxide
Details on test system and experimental conditions:
Concentration of the test substance resulting in precipitation: 313 ug/plate

Results and discussion

Test resultsopen allclose all
Species / strain:
other: as specified above
Metabolic activation:
with
Cytotoxicity / choice of top concentrations:
cytotoxicity
Remarks:
> 5000 ug/plate
Species / strain:
other: as specified above
Metabolic activation:
without
Cytotoxicity / choice of top concentrations:
cytotoxicity
Remarks:
> 5000 ug/plate
Species / strain:
other: as specified above
Metabolic activation:
with
Cytotoxicity / choice of top concentrations:
cytotoxicity
Remarks:
>500 ug/plate
Additional information on results:
Observations:
There are no sgnificant increases in the numbers of revertant colonies as a result of exposure to the test substance.
Remarks on result:
other: other: preliminary test
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