fremy's sulphazotised salts of potassium. 231 



a concentrated solution of sulphazate and sulphazite ; also by- 

 boiling a solution of sulphazate and then cooling it. When 

 strongly compressed the jelly became a transparent wax-like mass. 

 Heated in this waxy state to 50°-60° it suddenly changed into a 

 solution of sulp)hazite and minute crystals of basic sulphazotate. 

 In all other respects it proved to be intermediate in properties 

 to sulphazate and sulphazite. No other metasulphazates could be 

 prepared from it, so that Fremy was disposed to regard it as 

 being a doublesalt oî sulphazate ?ind sulphazite. Its constitution 

 must therefore have been that of nitrite combined with normal 

 or ö/ß normal hydroximidosulphate in such proportions and with 

 such additions perhaps of alkali as prevented crystallisation. 



We have not had Fremy's success in getting this salt in 

 form of jelly and wax but have met with just such phenomena 

 when forming barium sodium hydroximidosulphate, BaNaNSoOy, 

 OHo, as will be found described in our paper already frequently 

 referred to. We have however obtained a salt, or homogeneous 

 mixture of salts, of the same composition as the metasulphazate, 

 but with the form of the silky radiating fibrous crystals of the 

 nitrito-normal hydroximidosulphate, from wdiich it differed only 

 in showing deficiency of nitrite, that is, it w^as equivalent in com- 

 position to a mixture of the normal salt and its nitrite com- 

 pound, both of which crystallise with the same habit. We give 

 below Fremy's numbers, our own, and those calculated for the 

 expression, 3(KN0o, 2K3NSA, 40Ho); K.NSA; 30Ho. 



Potssm. Sulplinr Nitrogen Alk. potssra. 



Found (Fremy), 35.10 16.74 4.81 i^er cent. 



,, (D. & H.), 35.10 16.68 10.47 ,, 



Calculated, 35.06 16.74 5.23 10.23 „ 



We got the salt by dissolving the hydroximidosulphate in 



