Registration Dossier
Registration Dossier
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EC number: 217-315-6 | CAS number: 1809-14-9
Endpoint summary
Administrative data
Key value for chemical safety assessment
Genetic toxicity in vitro
Description of key information
Results of available in vitro studies:
- AMES test: negative.
- In Vitro Mammalian Chromosomal Aberration Test: negative.
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (negative)
Genetic toxicity in vivo
Description of key information
No study available.
Endpoint conclusion
- Endpoint conclusion:
- no study available
Additional information
The genetic toxicity of Dioctyl phosphonate was investigated with different types of in vitro tests:
- AMES test: Dioctyl phosphonate was examined for the ability to induce gene mutations in tester strains of Salmonella typhimurium and Escherichia coli. The five tester strains TA1535, TA1537, TA98, TA100 and WP2 uvrA were used. Experiments were performed both in the absence and presence of metabolic activation, using liver S9 fraction from rats pre-treated with Phenobarbital and 5,6-benzoflavone. No increases in revertant numbers were observed, at any dose level, with any tester strain, in the absence or presence of S9 metabolic activation.
- In Vitro Mammalian Chromosomal Aberration Test: Dioctyl phosphonate was assessed for its potential to induce structural chromosome aberrations in V79 cells of the Chinese hamster in vitro in two independent experiments. The experiment was performed in 1997. The chromosomes were prepared 18 h and 28 h after start of treatment with the test article. The treatment interval was 4 h with metabolic activation, 18 h and 28 h without metabolic activation. In both independent experiments, there were no biologically relevant increases in cells carrying structural chromosome aberrations after treatment with the test article. In addition no increase in the frequencies of polyploid metaphases was found after treatment with the test article as compared to the frequencies of the controls. In conclusion, it can be stated that Dioctyl phosphonate did not induce structural chromosome aberrations in vitro.
Justification for classification or non-classification
Dioctyl phosphonate is not classified for genetic toxicity according to the CLP Regulation (EC.n.1272/2008). For justification see the results of available studies.
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