Production of methyldichlorophosphane

C - Chemistry – Metallurgy – 07 – F

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260/613

C07F 9/28 (2006.01) C07F 9/52 (2006.01)

Patent

CA 1075266

PRODUCTION OF METHYLDICHLOROPHOSPHANE ABSTRACT OF THE DISCLOSURE: Methyldichlorophosphane is made by reacting methane with phosphorus trichloride in contact with carbon tetrachloride at temperatures higher than 500°C. To this end, the starting reactant mixture is admixed with 2 to 7 mol % of reaction-initiating carbon te- trachloride, based on phosphorus trichloride; the to 80 % by varying the reaction temperature within the range 500 to 650°C for constant residence times of 0.1 to 0.9 second; and resulting reaction mix- ture containing a residual analytically detectable 20 to 50 % proportion of the carbon tetrachloride used is condensed out.

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