OXIMIDOSULPHONATES OR SULPHAZOTATES. 



61 



Calculated. Found. 



A B 



Potassium 26'23 24-57 24*66 



Sodium 3-86 4*82 4-93 



Sulphur 21-46 21-44 21*37 



The ßi'f-sixths-noniial monopotassium sodium salt, KNü^H(NS.,0-%, 

 E,0, is nearly represented by two salts obtained in different ways. 

 Both salts were however slightly more basic than calculated, while in 

 the first to be noticed the potassium was slightly replaced by sodium, 

 and in the second salt the sodium was slightly replaced by potassium, 

 as will be seen fn^m the numbers given. The first salt (a) was in 

 suuill well-formed prismatic crystals, and was got accidentally by the 

 spontaneous evaporation of an ammoniacal solution of disodium 

 oximidosulphonate containing some potassium chloride. It was 

 readily soluble in water but could not be recrystallised unchanged. 

 It was free from chlorine. The second salt (/>) was obtained in one of 

 the attempts to get again the six-sevenths mixed salt already described. 

 To seven molecules of disodium oximidosulphonate in solution were 

 added two of sodium hydroxide and two of potassium hydroxide. 

 The solution was then evaporated in vacuo until crystallisation 

 occurred : — 



Calc. Found. 



(a) (b) 



Potassium 7*36 6*89 7*61 



Sodium 17-86 17*69 17-25 



Sulphur 24-15 23-93 23-96 



A ßve-sixths-normal 'potassium sodium salt, K^.4Niiz■QH(NS20^\, HoO, 

 was obtained as a crust of microscopic orthorhombic prisms when a 

 mixture in unknown proportions of disodium oximidosulphonate in 

 solution and potassium hydroxide was evaporated in the desiccator. 



A salt differing (3nly a little in composition from this was 



