Method for decreasing the sulfur content of phosphorous

Details Method for decreasing the sulfur content of phosphorous Method for decreasing the sulfur content of phosphorous

1993-09-07

1994-05-10

Langel, Wayne

Chemistry of inorganic compounds

Phosphorus or compound thereof

Elemental phosphorus

C01B 2504

Patent

active

053105303

ABSTRACT:
A method for purifying phosphorus to insure a low sulfur content involves intensively mixing phosphorus and concentrated sulfuric acid to form an emulsion, breaking the emulsion by contact with water or dilute sulfuric acid, and then immediately separating the phosphorus and diluted sulfuric acid. The separated phosphorus is then stored in water until further processing is desired and is characterized by a sulfur content as low as about 50 ppm.

REFERENCES:
patent: 3780164 (1973-12-01), Muller et al.

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