| hydrofluoric | <chemistry> Pertaining to, or containing, hydrogen and fluorine; fluohydric; as, hydrofluoric acid. <chemistry> Hydrofluoric acid, a colourless, mobile, volatile liquid, HF, very corrosive in its action, and having a strong, pungent, suffocating odour. It is produced by the action of sulphuric acid on fluorite, and is usually collected as a solution in water. It attacks all silicates, as glass or porcelain, is the agent employed in etching glass, and is preserved only in vessels of platinum, lead, caoutchouc, or gutta-percha. Origin: Hydro-, 2 + fluoric. Source: Websters Dictionary (01 Mar 1998) |
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| hydrofluoric acid | <chemical> Hydrofluoric acid. A solution of hydrogen fluoride in water. It is a colourless fuming liquid which can cause painful burns. Chemical name: Hydrofluoric acid (12 Dec 1998) |