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EC number: 200-756-3
CAS number: 71-55-6
No specific abiotic hydrolysis studies are available for submission. Vogel and McCarty 1986 (the research paper is included in the biodegradation section of the dossier) while evaluating the ability of anaerobic bacteria to degrade 1,1,1-trichloroethane quote the abiotic hydrolysis to the approximately nine years. The abiotic degradation route is as follows:1,1,1-Trichloroethane -> 1.1-dichloroethylene + acetic acid -> vinyl chloride -> carbon dioxide.
In the 1996 UK review it is noted
that the material is fairly resistant to abiotic hydrolysis with half
lives estimated in months rather than days. Contamination of the surface
and marine waters is most likely to occur from waste water disposal
following use in industrial processes such as metal cleaning. Similarly,
contamination of groundwater is thought to occur following leaching from
existing unregulated chemical disposal sites. Contamination of water is
therefore considered unlikely when used as a transported intermediate as
no release should occur. The UK review provides an estimate of the
air:water partition coefficient (Kaw) of -0.03 to -0.17 supported by the
fact that volatility from a I.0 Molar solution in 30 minutes is 6.1.
This indicates that abiotic hydrolysis will be of negligible importance
in the removal of this material from the environment.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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