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 2028430

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 an iodine compound capable of providing iodide ions (e.g., HI) so as to precipitate the arsenic (i.e., as AsI3) following by separation and recovery (e.g., by distillation or filtration) of purified anhydrous hydrogen fluoride.

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