'2% Combinations of oximuriatic acid and metals. 



60-48 chlorine 

 39-52 arsenic 



100-00 

 As the fuming liquor gives the white oxide when decom- 

 posed by water, arsenicane may be substituted for its old name. 

 Butter of ami- The butter of antimony is a well known substance. Thai 

 ^°^Y' which I have examined was obtained by heating together cor- 



rosive sublimate and antimony, or antimony and calomel ; and 

 was always purified by a second distillation at a low tempe- 

 rature. The best proportion of corrosive sublimate and the 

 metal for making the compound, I have found to be about 25 

 parts of the former to 1 part of the latter. 

 its properties. The butter of antimony, like arsenicane, is capable, when 

 rendered fluid by heat, of dissolving resin and sulphur, and 

 of combining with the fixed and volatile oils. It affects the 

 oil of turpentine very like the liquor of Libavius j the action 

 is considerable, much heat is produced, and the oil is rendered 

 brown. 



When the butter of antimony is decomposed by a suffici- 

 ently large quantity of the hydrosulphuret of potash, that 

 compound is formed, which is commonly called the golden 

 sulphur of antimony ; and which, when decomposed by heat, 

 . I have found to afford merely water and sulphuret of anti- 

 mony*. 

 Its component To ascertain the proportion of antimony in the butter of 

 pa rt$. antimony, 60'5 grains of this substance, colourless and crystal- 



lized, weighed in water, were heated in a solution of hydro- 

 sulphuret of potash. The whole of the antimony was dissolved, 

 and the hydrosulphuret of potash being in excess, there was 

 no precipitation on cooling. The solution was decomposed by 



Golden sul- * These results appear to me to demonstrate the truth of Mr. 



phur of anti- Proust's opinion, that the golden sulphur is a hydrosulphuretted oxide 

 mony. of antimony. From my experiments the only difference of composition 



betv?een kermes mineral and the preceding compound seems to consist 

 in the former containing a smaller proportion of sulphuretted hidro- 

 drogen than the latter ; for I have obtained by the decomposition of 

 kermes mineral, by heat, a compound of sulphuret of antimony and 

 protoxide ; and I have converted kermes into the golden sulphur, by 

 means of water impregnated with sulphuretted hidrogen. 



muriatit 



