Anhydrous Hydrogen Fluoride (HF)
Depending upon the pressure and temperature where it is being handled, anhydrous fluoride (100% hydrofluoric acid) can be either a colorless, fuming liquid or a colorless gas. Glass and glass-lined piping will deteriorate rapidly if they are used since moist HF attacks all silicates. Tantalum also is not suitable for HF, although other materials capable of handling HCl can be used.		Density of anhydrous HF Specific heat of anhydrous HF at constant pressure Viscosity of anhydrous HF Vapor pressure of anhydrous HF
Anhydrous hydrogen fluoride is a fluorinating agent in organic and inorganic reactions, and a catalyst in alkylation, isomerization, condensation, dehydration and polymerization reactions. It also has applications in the refining of uranium, the production of fluorine and aluminum fluoride, and as an additive in liquid rocket propellants.