C₂H₃Cl₃ Either of two nonflammable, irritating liquid isomeric compounds: 1,1,1-trichloroethane (CH₃CCl₃) is toxic, soluble in alcohol and ether, insoluble in water, and boils at 75°C; it is used as a solvent, aerosol propellant, and pesticide and for metal degreasing, and is also known as methyl chloroform; 1,1,2- trichloroethane (CHCl₂CH₂Cl) is clear and colorless, is soluble in alcohols, ethers, esters, and ketones, insoluble in water, has a sweet aroma, and boils at 114°C; it is used as a chemical intermediate and solvent, and is also known as vinyl trichloride.