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 Hy·dro·chlo·ric a.  Chem. Pertaining to, or compounded of, chlorine and hydrogen gas; as, hydrochloric acid; chlorhydric.
 Hydrochloric acid Chem., hydrogen chloride; a colorless, corrosive gas, HCl, of pungent, suffocating odor. It is made in great quantities in the soda process, by the action of sulphuric acid on common salt. It has a great affinity for water, and the commercial article is a strong solution of the gas in water. It is a typical acid, and is an indispensable agent in commercial and general chemical work. Called also muriatic acid and chlorhydric acid.
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