31. The mineral Gilsonite is categorized as a solvable material in oil solutions such as CS2 or TCE ( Trichloroethylene ). 32. The depot had a 2-ton electric hoist block for unloading stores from wagons and a trichloroethylene degreasing machine. 33. While dichloroacetylene is an unstable chemical, its stability can be increased by the presence of large amounts of trichloroethylene . 34. Utah State University researchers found trichloroethylene , or TCE, last week in about 90 percent of fruit from nine homes. 35. Diethyl ether was initially replaced by non-flammable ( but more toxic ) halogenated hydrocarbons such as chloroform and trichloroethylene . 36. In 1986, a Section 2 Chemical Substances was added, which included trichloroethylene and tetrachloroethylene, which had contaminated groundwater. 37. A : The gerbera daisy has proved in scientific tests to effectively remove trichloroethylene from sources such as varnishes and dry cleaning. 38. There was a claim that trichloroethylene produces cardiac malformations in the fetus, but scores of studies say it doesn't. 39. According to European regulation, the use of trichloroethylene is prohibited for individuals at a concentration greater than 0.1 %. 40. Due to its ease of use and improved safety profile with respect to organ toxicity, halothane quickly replaced chloroform and trichloroethylene .