found: Wikipedia, Jan. 27, 2013(Hydrogen fluoride is a chemical compound with the formula HF. This colorless gas is the principal industrial source of fluorine, often in the aqueous form as hydrofluoric acid, and thus is the precursor to many important compounds including pharmaceuticals and polymers (e.g. Teflon).)
found: Facts about hydrogen fluoride (hydrofluoric acid), via Centers for Disease Control and Prevention website, Jan. 27, 2013(Hydrogen fluoride is a chemical compound that contains fluorine. It can exist as a colorless gas or as a fuming liquid, or it can be dissolved in water. When hydrogen fluoride is dissolved in water, it may be called hydrofluoric acid.)
found: Occupational safety and health guideline for hydrogen fluoride, via Occupational Safety and Health Administration website, Jan. 27, 2013(Formula: HF. Synonyms: Anhydrous hydrofluoric acid, antisal 2B, hydrofluoride, hydrofluoric acid, fluorhydric acid, fluoric acid)
found: The American heritage science dictionary, ©2005, via TheFreeDictionary.com, Jan. 27, 2013(hydrogen fluoride: A corrosive compound that exists as a colorless, fuming liquid or a highly soluble gas. Hydrogen fluoride is used as a reagent, catalyst, and fluorinating agent, in the refining of uranium, and in making many fluorine compounds. An aqueous solution of hydrogen fluoride is called hydrofluoric acid. Chemical formula: HF)
