OXIMIDOSULPHOXATES OR SULPHAZOT.VTES. 5]^ 



sodium salts this one is exceedingly soluble in water, requiring less 

 than 1-5 parts of water at 14° to dissolve it, aud can be repeatedly 

 recrystaUised unchanged. It tends greatly to foi-in supersaturated solu- 

 tions. We have made the following analyses of it prepared under 

 different conditions : — 



Calc. Found. 



(a) (6) (c) (rf) 



Sodium i>2-77 22-51 22*64 22-63 22-77 



Sulphur 2:^-73 23-76 24-04 23-73 23-49 



Oxinnde residue 1M3 1M4 — 11-13 — 



Water 6-68 3-59 3-53 — — 



Alkalinity, sodium. .. 5-69 — 5*45 — 5*83 



The alkalinity of the preparations was determined with decinoi-mal 

 acid aud methyl-orange. The water was estimated by drying at IK)**, 

 and it will be noticed tliat h;df of it was retained at this temperature. 

 Similar retention of water will be seen in the case of the tive-sixths 

 potassium salt, of one of the sodium-potassium salts, and in that of 

 the barium salts, and is not due to the fixation of the water by 

 hydrolysis. It is remarkable that there should be such a difference in 

 this respect between this and the normal salt. 



Preparation («) was deposited by eva[)oration in the cold of a 

 soluticjn of two m«jle<'nles of the disodium salt to one of sodium 

 hydroxide ; preparation (/>) was the same salt recrystaUised troni water 

 and separated as a preci[)itate from the supersatui'ated S(jlutii)n by 

 stirring J (t-) was obtained by evaporating the mother-liquor of (/>) ; 

 aud ((/) was prepared by evaporating a solution of the calculated 

 quantities of the disodium and trisodium oximidosulpJKjnates. 



Futassiti til oxirnidosulphonafes, 



Nonwil polassitnii sail. KgNS-.O;, HjO. Also KaNS.O^, 2H„U. — 

 We have several times prepared and analysed this salt with results 



