Abstract: Stabilized perchloroethylene containing 0.001 to 0.1% by weight of N-alkylmorpholine, 0.001 to 0.01% by weight of alkylphenols, 0.0005 to 0.002% by weight of diisopropylamine, and 0.05 to 0.5% by weight of cyclohexeneoxide. By stabilization with the mixture of stabilizers, the perchloroethylene is stabilized to an extraordinary degree against attack by metals, particularly, decomposition through oxidation in contact with metals or metal salts, in some cases also upon exposure to light. A further improvement of the combined stabilizing action can be obtained by the addition of 0.005 to 0.1% by weight of epoxipropanol.

Abstract: A stabilized 1,1,1-trichloroethane containing, as stabilizer, from0.1% to 1% by weight of 2,3-epoxy-1-propanol,1% to 3% by weight of 1,4-dioxane, and0.1% to 0.5% by weight of butylene 1,2-oxide.