Stabilization of phosphorochloridates or thionophosphorochloridates with phosphorus pentachloride
AssigneeMobil Oil Corporation
InventorRoger P. Napier
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Abstract
Phosphorochloridates and thionophosphorochloridates are stabilized against decomposition by the addition of minor amounts of phosphorus pentachloride or the equivalent minor amount of phosphorus trichloride and chlorine. Hydrogen chloride which may be formed is removed by sparging with inert gas. The invention permits the elimination of the customary expensive distillation step previously relied on for production of a stable product to attain commercially acceptable stability to alkyl phosphorochloridates such as diethylphosphorochloridate.
Claims8
A method of stabilizing phosphorochloridate or thionophosphorochloridate compounds which comprises adding to said compounds, as prepared, 0.07 to 1.5 weight percent phosphorus pentachloride without distillation to remove impurities which promote decomposition.
A method of stabilizing phosphorochloridate or thionophosphorochloridate compounds which comprises adding to said compounds, as prepared, 0.07 to 1.5 weight percent of phosphorus pentachloride, in the form of phosphorus trichloride and chlorine, and sparging with inert gas to remove HCl formed without distillation to remove impurities which promote decomposition.
Dependencies are inferred from the claim text.