Hydrogen fluoride

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A colorless, corrosive gas that is readily absorbed in water. Hydrogen fluoride dissolve Silica, Silicic acid, and Glass. It is used as a catalyst and as a fluorinating agent.

Synonyms and Related Terms

hydrofluoric acid gas; anhydrous hydrofluoric acid


  • Toxic by inhalation, ingestion. Corrosive to skin and eyes. Nonflammable.
  • ThermoFisher: SDS

Physical and Chemical Properties

Soluble in water, ethanol. Slightly soluble in benzene, toluene, xylene.

Composition HF
CAS 7664-39-3
Melting Point -83 C
Molecular Weight mol. wt. = 20.005
Boiling Point 19.5 C

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