What gases may be produced during welding in the presence of trichloroethyene?
Phosgene and dichloroacetyl chloride. A case report describes use of trichloroethylene as a degreaser prior to welding resulting in respiratory symptoms followed by delayed pulmonary edema. Formation of phosgene and dichloroacetyl chloride from trichloroethylene is related to phytochemical decomposition in the presence of intensive ultraviolet light.
Contributor: Rachel Schult, PharmD, DABAT, University of Rochester Medical Center
B Sjögren, et al. Pulmonary reactions caused by welding-induced decomposed trichloroethylene. Chest 1991;99(1):237-8. doi: 10.1378/chest.99.1.237.
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