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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Endpoint:
in vitro gene mutation study in bacteria
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:
2011
Report date:
2011

Materials and methods

Test guideline
Guideline:
OECD Guideline 471 (Bacterial Reverse Mutation Assay)
GLP compliance:
yes
Remarks:
Japan Existing Chemical Data Base: All the tests reported were performed in accordance with the chemicals GLP under the Law concerning Examination and Regulation of Manufacture, etc. of Chemical Substances and also meet the requirements of the OECD GLP.
Type of assay:
bacterial reverse mutation assay

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2'-[ethylenebis(oxymethylene)]bisoxirane
EC Number:
218-746-2
EC Name:
2,2'-[ethylenebis(oxymethylene)]bisoxirane
Cas Number:
2224-15-9
Molecular formula:
C8H14O4
IUPAC Name:
2,2'-[ethylenebis(oxymethylene)]bisoxirane
Details on test material:
weight per epoxy: 115

Method

Species / strainopen allclose all
Species / strain / cell type:
E. coli WP2 uvr A
Species / strain / cell type:
S. typhimurium TA 1535, TA 1537, TA 98 and TA 100
Metabolic activation:
with and without
Test concentrations with justification for top dose:
dose-finding study - with and without S9 mix - all strains: 0, 5, 15, 50, 150, 500, 1500, 5000
main study - without S9 mix - TA100, TA1535: 0, 9.77, 19.5, 39.1, 78.1, 156.3, 312.5, 625, 1250, 2500, 5000
main study - without S9 mix - WP2uvrA: 0, 78.1, 156.3, 312.5, 625, 1250, 2500, 5000
main study - without S9 mix - TA98, TA1537: 0, 312.5, 625, 1250, 2500, 5000
main study - with S9 mix - TA100, TA1535: 0, 39.1, 78.1, 156.3, 312.5, 625, 1250, 2500, 5000
main study - with S9 mix - WP2uvrA: 0, 78.1, 156.3, 312.5, 625, 1250, 2500, 5000
main study - with S9 mix - TA98, TA1537: 0, 312.5, 625, 1250, 2500, 5000
Vehicle / solvent:
- Vehicle(s)/solvent(s) used: water for injection
Controls
Untreated negative controls:
yes
Positive controls:
yes
Positive control substance:
9-aminoacridine
sodium azide
furylfuramide
other: 2-aminoanthracene

Results and discussion

Test resultsopen allclose all
Species / strain:
S. typhimurium TA 100
Metabolic activation:
with and without
Genotoxicity:
positive
Cytotoxicity / choice of top concentrations:
no cytotoxicity nor precipitates, but tested up to recommended limit concentrations
Species / strain:
S. typhimurium TA 1535
Metabolic activation:
with and without
Genotoxicity:
positive
Cytotoxicity / choice of top concentrations:
no cytotoxicity nor precipitates, but tested up to recommended limit concentrations
Species / strain:
E. coli WP2 uvr A
Metabolic activation:
with and without
Genotoxicity:
positive
Cytotoxicity / choice of top concentrations:
cytotoxicity
Species / strain:
S. typhimurium TA 98
Metabolic activation:
with and without
Genotoxicity:
positive
Cytotoxicity / choice of top concentrations:
no cytotoxicity nor precipitates, but tested up to recommended limit concentrations
Species / strain:
S. typhimurium TA 1537
Metabolic activation:
with and without
Genotoxicity:
positive
Cytotoxicity / choice of top concentrations:
no cytotoxicity nor precipitates, but tested up to recommended limit concentrations
Additional information on results:
TEST-SPECIFIC CONFOUNDING FACTORS
- Precipitation: No precipitates were noted at any concentration on the surface of the agar plate at the start and on completion of incubation

Applicant's summary and conclusion

Conclusions:
The test substance tests positive under the conditions of this assay.