Removal of arsenic from hydrogen fluoride

Details Removal of arsenic from hydrogen fluoride Removal of arsenic from hydrogen fluoride

1984-05-03

1985-01-01

Doll, John

Chemistry of inorganic compounds

Halogen or compound thereof

Hydrogen halide

423483, C01B 722

Patent

active

044915705

ABSTRACT:
Arsenic impurities are removed from anhydrous hydrogen fluoride by treating the hydrogen fluoride with elemental chlorine and anhydrous hydrogen chloride or a fluoride salt or both and then separating the purified anhydrous hydrogen fluoride, preferably by distillation, from the nonvolatile arsenic compounds.

REFERENCES:
patent: 3166379 (1965-01-01), Bradley et al.
patent: 3689370 (1972-09-01), Osaka et al.
patent: 4032621 (1977-06-01), Meadows
patent: 4083941 (1978-04-01), Jayawant et al.

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