摘要 |
<p>Diisopropylamine, N-methyl pyrolle, butylene oxide, propylene oxide, methyl acetate, acetone, tertiary amylenes and optionally methyl alcohol in admixture with methylene chloride have been found to prevent degradation of methylene chloride in the presence of metals, metal halides, combinations thereof, and aliphatic compounds. Reactions of aliphatic organic compounds with said metals, metal halides and combinations thereof to form products which result in deterioration of methylene chloride are inhibited. A method for vapor degreasing metals with the stabilized methylene chloride is described.</p> |