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EC number: 200-756-3
CAS number: 71-55-6
No specific photolysis studies are available for submission. The estimation for elimination by photolytic reactions from water are thought to be negligible however the material will readily volatilise from water and has an estimated air water partition coefficient (Kaw) of -0.13 - -0.17.
In the 1996 UK review it is noted
that the material is fairly resistant to photolysis with an upper half
live estimate of six years. The results of studies submitted in the
photodegradation section of this dossier indicate that the half live due
to hydroxyl radical removal in the upper atmosphere is estimated to be
3.8 - 6.0 years. The UK review attributes the bulk of atmospheric
release to metal cleaning activities and similar uses which are now
severely restricted following implementation of the Montreal Protocol.
This review also estimates that in 1988 approximately 6% of total
production was released into the environment of which 0.2 - 0.3% was
released during manufacture. This resulted in estimates of 0.15 -
0.17ppb in the atmosphere. As 1,1,1-trichloroethane is now restricted to
use as a transported intermediate releases into the atmosphere would be
expected to have radically reduced.
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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