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Environmental fate & pathways

Phototransformation in water

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Description of key information

Key information taken from published data. 
Photolysis is probably not significant in aquatic systems; photodissociation in the stratosphere is the primary fate of this compound.

Key value for chemical safety assessment

Additional information

Dichlorodifluoromethane introduced into aqueous systems will most likely volatize to the atmosphere. Once in the troposphere, dichlorodifluoromethane remains stable. It eventually diffuses into the stratosphere or is carried back to the earth during the precipitation process. Once in the stratosphere dichlorodifluoromethane is photolyzed by shorter wave-length, higher energy ultraviolet light with the subsequent formation of chlorine atoms.