Process for purifying hydrogen fluoride

Details Process for purifying hydrogen fluoride Process for purifying hydrogen fluoride

C - Chemistry, Metallurgy

01

B

23/180

C01B 7/19 (2006.01)

Patent

CA 2024624

PROCESS FOR PURIFYING HYDROGEN FLUORIDE ABSTRACT OF THE DISCLOSURE A process for preparing hydrogen fluoride that involves treating anhydrous hydrogen fluoride containing primarily trivalent arsenic impurities with a sulfur compound capable of providing sulfide ions (e.g., H2S) so as to precipitate the arsenic (i.e., as As2S3) followed by separation and recovery (e.g., by distillation or filtration) of purified anhydrous hydrogen fluoride.

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