Stabilized methylchloroform

Details Stabilized methylchloroform Stabilized methylchloroform

C - Chemistry, Metallurgy

07

C

260/651.3

C07C 17/42 (2006.01) C23G 5/028 (2006.01)

Patent

CA 1043817

ABSTRACT A stable 1,1,1-trichloroethane composition con- taining, based on total composition weight, a) about 0.2 to about 1.2 weight percent of a C3-8 monoepoxide, C3-8 monochloroepoxide or mixture of such epoxides; and b) about 3.8 to about 4.8 weight percent of a mixture of one component from each group: 1) nitromethane; 2) 1,1-dimethoxyethane or t-butyl alcohol, and 3) dioxene, trioxane, or dioxolane, in the proportions set forth in drawings with the provision that the 1,1-dimethoxyethane-nitromethane-dioxolane system is employed in a concentration of 4.3 to 4.8 weight percent. The above compositions are stable in the presence of the metals aluminum, zinc, iron and their alloys, both in the liquid and vapor state of the compositions. The compositions do not partition in a manner to concentrate the low boiling stabilizers in the vapor or the high boiling stabilizers in the liquid even after refluxing over extended periods of time accompanied by frequent additions of make-up volumes of stabilized 1,1,1-trichloroethane.

176891

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