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Ammonium Fluoride
Ammonium fluoride, [NH4]F, may be obtained by neutralizing ammonia with hydrofluoric acid. It crystallizes as small prisms, having a sharp saline taste, and is exceedingly soluble in water. It decomposes silicates, and thus glass, on being heated with them, a property shared among all soluble fluorides. For this reason it cannot be handled in glass test tubes or apparatus during laboratory work. It also sublimes when heated - a property common among ammonium salts.
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