Chemical Science. 397 



pitating the antimony by sulphuretted hydrogen, and afterwards 

 the chlorine, by nitrate of silver; the results were — 



Antimony . . . 53.27 by theory 54.85 

 Chlorine . . . 46.73 „ 45.15 



100.00 100.00 



By passing dry chlorine over heated antimony, combustion of 

 the metal is caused, and a very volatile liquid is formed, being 

 another chloride of antimony ; it is white, or of a light yellow 

 colour, and in its external properties resembles Libavius' liquor. 

 It has a strong disagreeable odour, and fumes in the air. Exposed 

 to air, it absorbs water, and becomes a solid crystalline mass ; 

 with more water, it heats, and precipitates oxide of antimony. 

 Analyzed in a manner similar to the former compound, it gave— 



Antimony . . . 40.56 by theory 42.15 

 % Chlorine . . . 59.44 „ 57.85 



supposing it to contain 5 proportionals of chlorine to 1 of metal. 



When chlorine is passed over the sulphuret of antimony, con- 

 taining three proportionals of sulphur, the first, or crystalline 

 chloride, is obtained, mixed with chloride of sulphur; upon apply- 

 ing heat, the former dissolves in the latter, and as the solution 

 cools crystallizes again in large crystals. 



Sulphurets of Antimony. Having made many experiments on 

 these compounds, M. Rose has found but three ; these correspond- 

 ing with the oxides of the same metal. The compound, with 3 

 proportionals of sulphur, is the native mineral, and corresponds 

 to the oxide with 3 proportionals of oxygen. It dissolves en- 

 tirely in muriatic acid, disengaging only sulphuretted hydrogen. 

 It is also formed by passing sulphuretted hydrogen through solu- 

 tion of emetic tartar, or through butter of antimony dissolved in 

 water and tartaric acid. It is, in this case, of an orange colour, 

 but is a true binary sulphuret ; as is also kermes mineral ; both 

 these being, according to M. Rose, compounds with 3 propor- 

 tionals of sulphur. 



The next compound is obtained by dissolving antimony in 

 nitro-muriatic acid, evaporating to dryness, heating the mass 

 to redness, fusing it with caustic potash, by which it is said 

 to form what is called antimonious acid, and then acting on the 

 fuzed mass with water and muriatic acid until a clear solution is 

 obtained. This solution, precipitated by sulphuretted hydrogen, 

 yields the body in question of an orange colour : by analysis it 

 gave — 



Antimony . . . 66.35 by theory 63.72 

 Sulphur .... 33.65 „ 33.28 



supposing it to contain 4 proportionals of sulphur. 

 Vol. XX. 2 E 



