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EC number: 203-396-5
CAS number: 106-42-3
The estimated half life of the xylene isomers is around 1 day based on a recommended reaction rate with hydroxyl radicals and the concentration of hydroxyl radicals recommended in the Technical Guidance Document (2003).
Xylene isomers are expected to degrade by
indirect photolysis in air. The dominant process is by reaction with
hydroxyl radicals. Using rate constants recommended by Atkinson (1985)
for the reaction rate with hydroxyl radicals half lives of around 1 day
are calculated for each of the xylene isomers. These data indicate that
indirect photolysis is expected to be a significant route of xylene
removal from the environment.
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