Trichloroethane and trichloroethylene are organic solvents that have historically been used as ingredients in many products, including typewriter correction fluid ("Wite-Out"), color film cleaners, insecticides, spot removers, fabric-cleaning solutions, adhesives, and paint removers. They have also been used extensively in industry as degreasers. Trichloroethane is available in two isomeric forms, 1,1,2-trichloroethane and 1,1,1-trichloroethane, with the latter (also known as methyl chloroform) being the more common. Tetrachloroethylene (perchloroethylene) is another related solvent that is widely used in the dry cleaning industry, although some regulatory agencies, such as the California Air Resources Board, have mandated its gradual phase-out for this application. Similarly, recognition of the stratospheric ozone depletion potential of 1,1,1-trichloroethane has resulted in the substitution of other chemicals for most applications.