- COMBINATIONS OF OXIMURIATIC ACID AND METALS. ^^S 



muriatic acid, and the golden sulphur thus thrown down was 

 collected on a filter, well washed, and dried j heated slow^ly to 

 redness in a glass tube, steam in plenty was disengaged with 

 very slight traces of sulphur, and sulphuret of antimony re- 

 mained, which, fused into one mass, weighed 45 grains. Ac- 

 cording to the experiments of Proust, which I have repeated 

 with the same result, sulphuret of antimony contains 74' 1 per 

 cent of metal. Hence 45 grains of sulphuret, or the 60"5 of 

 butter of antimony, from which the sulphuret was procured, 

 must contain 33'35 of metal ; and considering the remainder 

 27-15 of the 60*5 as the proportion of chlorine, 100 of the 

 butter of antimony seem to consist of 



3958 chlorine 



60-42 antimony 



10000 

 This compound, as it yields, when decomposed by water, the 

 submuriated protoxide, may be called antimoniane or stibiane. 



A compound of bismuth and chlorine has been long known. Butter of bis- 

 bearing the name of the butter of bismuth. It is obtained both niuth, 

 when bismuth is heated with corrosive sublimate and calomel. 

 2 parts of corrosive sublimate to one pait of metal I have found 

 good proportions for its preparation. There is some difficulty 

 in procuring it pure, and entirely free from the mercury re- 

 vived J this is most readily effected by keeping the butter of- 

 bismuth in fusion, at a temperature just below that at which 

 mercury boils j the mercury slowly subsides and collects in 

 the bottom of the vessel, and this operation, continued for an 

 hour or two, affords a pure, or nearly pure, butter of Jaismuth, 

 Thus prepared, it is of a grayisli white colour, opaque, un- 

 crystallized, and of a granular texture. In a glass tube, with 

 a very small orifice, it bears a red heat without subliming. 



As a hydrosulphuret of bismuth is produced when the butter 

 of bismuth is heated with the hydrosulphuret of potash ; and 

 as this hydrosulphuret, like that of antimony, affords, when 

 decomposed by heat, a sulphuret and water j I have applied the 

 same mode of analysis to this compound as to the last. 



55 grains of butter of bismuth were decomposed in a warm Analysis of it. 

 solution of hydrosulphuret of potash. The dark brown hy- 

 drosulphuret of bismuth thus formed, and not dissolved, was 



collected 



