Registration Dossier

Environmental fate & pathways

Phototransformation in water

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Degradation of trichloroethylene in water by photolysis is slow, with a half-life of 201 days

Key value for chemical safety assessment

Half-life in water:
201 d

Additional information

Photolysis is not likely to be a significant removal process for trichloroethylene. Trichloroethylene (1 mg/l) in water was degraded by 52-56% after one year in the dark and by 70-79% in the presence of sunlight (Dilling et al., 1975).