Abstract
Thermal decomposition of tetrachloroethylene was investigated by means of passing air containing tetrachloroethylene vapor through a quartz tube heated at 300 to 940°C. Tetrachloroethylene began to decompose near 400°C and vigorous pyrolysis occurred over 600°C. Complete decomposition was observed at 800°C. Hydrogen chloride and phosgene were detected as decomposition products, presumably because chemical reaction occurs between tetrachloroethylene and water contained in tetrachloroethylene. Organic components identified as pyrolysis products were trichlorobutene, 1,3-dichloro-2-propanone, tetrachlorobutadiene, dichlorocyclopentane/dichloropentene, methyl trichloroacetate, tetrachloroacetone, tetrachloropropene, trichlorocyclopentane/trichloropentene, hexachloroethane, pentachloropropene, hexachloropropene, hexachlorobutadiene.
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