Process for purifying hydrogen fluoride

Details Process for purifying hydrogen fluoride Process for purifying hydrogen fluoride

C - Chemistry, Metallurgy

01

B

C01B 7/19 (2006.01)

Patent

CA 2076372

2076372 9113024 PCTABS00007 A process for manufacturing high purity anhydrous hydrogen fluoride (HF) having low levels of oxidizable impurities by electrolytically oxidizing the impurities. Specifically, trivalent arsenic impurity in the anhydrous hydrogen fluoride is oxidized to a non-volatile pentavalent arsenic compound. The resultant mixture is distilled to recover high purity anhydrous hydrogen fluoride with low levels of arsenic impurity.

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