Method for extracting antimony from elemental phosphorus

Details Method for extracting antimony from elemental phosphorus Method for extracting antimony from elemental phosphorus

1996-02-05

1997-09-23

Bos, Steven

Chemistry of inorganic compounds

Phosphorus or compound thereof

Elemental phosphorus

C01B 2501

Patent

active

056701268

ABSTRACT:
A process for purifying elemental phosphorus, by dosing a multi-phase elemental phosphorus system, having an aqueous phase and an immiscible, elemental phosphorus phase containing antimony, with a conditioning agent selected from the group consisting of iron (II) salt or iron (III) salt with free iodine; iron (II) iodide; free iodine; iron (II) sulfate; or iron (III) sulfate in an amount effective to lower the amount of antimony in the phosphorus; agitating the resultant mixture at a temperature above the melting point of phosphorus, but below the boiling point of water, and then separating the aqueous phase from the phosphorus phase to recover a phosphorus lower in antimony content.

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