Process for the preparation of phosphorus pentachloride

Details Process for the preparation of phosphorus pentachloride Process for the preparation of phosphorus pentachloride

1981-03-02

1982-06-15

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Halogen containing

C01B 2510

Patent

active

043350852

ABSTRACT:
The invention relates to a process for the preparation of highly pure phosphorus pentachloride in the form of a free-flowing crystalline powder by reaction of phosphorus trichloride with chlorine. The reaction is carried out in two stages. In the first stage, phosphorus trichloride is combined with 0.1 to 0.999 times the molar amount of chlorine at a temperature of 0.degree. to 150.degree. C., while stirring, and is thereby reacted to give a crystal sludge comprising phosphorus pentachloride and phosphorus trichloride. In the second stage, this sludge is allowed to react with an excess of chlorine at 0.degree. to 150.degree. C. to give phosphorus pentachloride.

REFERENCES:
patent: 1906440 (1933-05-01), Wirth
patent: 1914750 (1933-06-01), Marsh
patent: 3995013 (1976-11-01), Demarq
patent: 4265865 (1981-05-01), Munster et al.
Ullman, Enzyklopadie der technischen Chemie (Encyclopedia of Industrial Chemistry) 3rd Ed., vol. 13, p. 563.
Kirk-Othmer 2nd Ed., vol. 15, p. 307.

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