Preparation of hydrogen fluoride with low levels of arsenic,...

Details Preparation of hydrogen fluoride with low levels of arsenic,... Preparation of hydrogen fluoride with low levels of arsenic,...

C - Chemistry, Metallurgy

01

B

23/180

C01B 7/19 (2006.01)

Patent

CA 1074080

E.I. du Pont de Nemours and Company (Meadows, Geoffrey W.) ABSTRACT OF THE DISCLOSURE A process for preparing pure anhydrous hydrogen fluoride with decreased levels of arsenic, iron and sulfite by treating anhydrous hydrogen fluoride sequentially with an oxidizing agent, and then a heavy metal free reducing agent, distilling the resulting mixture and recovering the pure hydrogen fluoride.

266219

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