Hydrogen fluoride grades available

Anhydrous hydrogen fluoride is available from a number of suppliers with grades ranging from 99.0 percent to 99.96 percent. The major impurities are water H2O) and sulfiir dioxide (SO2). A normal specification for 99.90 mole percent hydrogen fluoride is as follows ... 

Commercially available hydrogen fluoride usually is not suitable for catalytic hydrogenation because of its sulfur dioxide content An oxidative treatment with manganese dioxide and distillation are needed for the preparation of hydrogena tion-grade hydrogen fluoride [d, 4]... 

Reagents. Hydrogen fluoride can be obtained in convenient steel containers equipped with dependable needle valves. Excellent grades of the crystalline anhydrous fluorides of zinc and antimony are available commercially. 

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