Hydrogen, Antimo′′niuretted

(SbH 3 .) Syn. Antimonetted hydrogen , Hydride of antimony , Stibamine ; Hydrogenium an tim on i a tum , L. A gaseous compound of antimony and hydrogen, prepared by di olving an alloy of antimony with a large exce of zinc in hydrochloric or dilute sulphuric acid. It has never been obtained pure, a variable proportion of free hydrogen being always present. It burns with a bluish-white flame, giving rise to dense fumes of teroxide of antimony, and when conducted through a red-hot tube, or the flame is thrown on a cold surface, as a porcelain plate, metallic antimony is deposited. This gas is a deadly poison when inhaled. See Arsenious acid .