OXIMIDOSULPHONATES OR SULPHAZOTATES. 73 



prepared. It liad the composition expressed Ijy the formula, 

 Ba,,K,,H(NS,0,),3, lOH.O : — 



Calc. Fouud. 



Barium o3-95 :53-l)3 



Potassium ll'o5 11*57 



Sulphur 17-18 17-03 



Tlie attempt to get tlie salt BalvNS.O- by direct reaction thus: — 



K3(XS,U;;, + lkCL,== IkKXS.O; + K,HNS,.U, + iMvCl. 



was onlv partly successful. The precipitate obtained on nddiug to a 

 warm concentrated solution of one mol. of the K., salt one of barium 

 chloride had the composition shown by the formula (IIO).jB;!6K4ÏI 

 (NS,0,),3, H,0, or quite probably. H0Ba,KXN^S,0;)5, 1^1,0. This 

 composition would agree with that of a barium sodium salt already 

 described, BaeXa3(N'SoO;),5, if an atom of barium were not half dis- 

 placed by one of potassium. 



Calc. Found. 



Bariuui 41-49 41-68 



Potassium 7-89 8-22 



Sulphur 16T5 IG-OG 



This precipitate may Ije represented as a mixture or compound of 

 4BaKNS,0, with (HOBaX,HXS,0„ FLO (see the lead salts 3, p. 81, and 7, 

 p. 85) and it is probable that the precipitate first forined consists largely 

 <jf the latter salt, and that when, by the accumulation of dipotassium 

 salt the mother-liquor lessens in basicity, the BaK salt alone precipi- 

 tates. The reaction representing the formation of the hydroxy- 

 barium salt — 



2BaCL+2K3XS,,0, + 2H,0 = (HOBa),HXSA + K,HXSA + 4KCl 



— ^in which (HOBa)2HNS207 when doubled is equivalent to Ba(0H)2 + 



