228 INORGANIC AGENTS 



SbOj + NajSbSj f 2 H^O. Strain and add sulphuric acid 

 to the hot liquor as long as precipitation occurs. NaSbOj + 

 Na,SbS3 + 2 H,SO, = QhS, + 2 Na,SO, + 2 H,0. 



Properties. — An amorphous, reddish-brown powder, 

 becoming lighter in color on exposure to the light, and 

 having neither odor or taste. Insoluble in water or alcohoL 



Golden Sulphur. (Non-official.) 



A yellow, insoluble powder, is another compound of 

 antimony, consisting of a mixture of antimony trisulphide 

 and irioxide. 



Dose. — Neither kermes mineral nor golden sulphur are 

 suitable for internal use. The dose would be twice or 

 thrice that of tartar emetic. 



Antimonii Oxtdum. Antimony Oxide. SbjOj. (Non-official.) 



{Antimony Trioxide.) 



Derivation. — Pour a solution of chloride of antimony 

 into water. The oxychlOride of antimony is precipitated. 

 Sb CI3 -t- H,0 = Sb O CI + 2 H CI. 



The precipitate is treated with carbonate of sodium, 

 and the result is washed and dried. 2 Sb O CI + Na^ C O, 

 = Sb, O3 + 2 Na CI + C O,. 



Properties. — A heavy, grayish-white powder, without 

 odor or taste, and permanent in the air. Almost insoluble 

 in water and insoluble in alcohol. 



Dose. — Would be twice that of tartar emetic, but the 

 oxide is inappropriate for internal use. 



Antimonii et Potassii Tartras. Antimony and Potassium 

 Tartrate. 2 K (SbO) C,H,Oe + fl,0. (U. S. P.) 



Synonym. — Antimonium tartaratum, B.P.; tartar emetic, 

 tartarated antimony, tartarus emeticus, stibio-kali tartaricum, 

 E.; antimonii potassio- tartras, antimonium tartarizatum, 

 tartarus stibiatus, P.G.; tartrate de potasse et d'antimoine 

 emetique, tartre stibie, Fr.; brechweinstein, Q. 



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