Unfortunately, the acronym "TCE" has been used for both 1,1,1-trichloroethane and trichloroethene (and even sometimes tetrachloroethene). It appears, though, t

Unfortunately, the acronym "TCE" has been used for both 1,1,1-trichloroethane and trichloroethene (and even sometimes tetrachloroethene). It appears, though, that the preferred usage is "TCA" for trichloroethane (either 1,1,1-TCA or 1,1,2-TCA) and "TCE" for trichloroethene. ("Trichloroethylene" is an alternate name for trichloroethene.) For clarity, I would suggest not using "TCE" for trichloroethane.