Registration Dossier
Registration Dossier
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EC number: 618-014-6 | CAS number: 874288-98-9
Endpoint summary
Administrative data
Description of key information
1,2 -dichloro-1 -[difluoro(trifluoromethoxy)methoxy]-1,2,2-trifluoroethane is used as intermediate under strictly conditions only and therefore no release to the environment is anticipated.
Additional information
As other fluorochemical products 1,2-dichloro-1-[difluoro(trifluoromethoxy)methoxy]-1,2,2-trifluoroethane would not be expected to undergo significant biodegradation in any of the environmental compartments.
No experimental data are available for hydrolysis in water but, since 1,2-dichloro-1-[difluoro(trifluoromethoxy)methoxy]-1,2,2-trifluoroethane does not contain any functional group associated with hydrolysis properties at relevant environmental conditions, and due to the presence of carbon-fluorine bond which is the strongest bond in organic chemistry (O’Hagan, 2008) it can be concluded that hydrolysis would not a relevant degradation mechanism for 1,2-dichloro-1-[difluoro(trifluoromethoxy)methoxy]-1,2,2-trifluoroethane.
1,2-dichloro-1-[difluoro(trifluoromethoxy)methoxy]-1,2,2-trifluoroethane is characterized by a high Henry Law’s constant of 5 x 10E6 Pa m3 /mol a and low water solubility of 0.84 mg/L, indicating that the product would tend quickly to volatilize from water reaching the atmospheric compartment.
Basing on the experimental Log Kow = 4.4 and the calculated Log Koc = 3.30 a certain affinity for organic matter would be expected.
It must be noted that 1,2-dichloro-1-[difluoro(trifluoromethoxy)methoxy]-1,2,2-trifluoroethane is used as intermediate under strictly conditions only and therefore no release to the environment is expected.
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