Work-up of dialkyl phosphorodithioic acid esters
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United States of America Patent
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Nov 22, 1988
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N/A
app pub date -
Nov 24, 1986
filing date -
Nov 24, 1986
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Expired
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Abstract
A process for purifying a reaction mixture comprising a phosphorodithioic acid ester of dichloro-para-dioxane prepared by reacting an O,O-dialkyl phosphorodithioic acid with a dichloro-para-dioxane in the presence of a catalytic amount of a Lewis acid. This process comprises washing the reaction mixture with an ammonium hydroxide solution, and preferably with an ammonium hydroxide solution containing ammonium chloride.
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