Oximidosulphonates or Sulphazotates, 



By 

 Edward Divers, MD., FR. S. 



and 



Tamemasa Haga, F.C.S. 



Hy treatioir a solution of potassium nitrite and hyciroxide with 

 -ulplmr dioxide, Fremy, in 1845, discovered a series of salts of com- 

 plex composition, of which, without succeedinçf in getting" any definite 

 insight into their chemical constitution, he was yet ahle to indicate to 

 some extent a classification into tlu'ce grou])s : the sulphazatcH, the 

 sulphazotates, and the snlphammonate. He attached, and justly so, 

 special importance to the sulphazotates, the salts which are the subject 

 of the present pa})er, and from which by hydrolysis are derived the 

 oxijamidosulphotiatcs treated of in an earlier communication by us 

 to this Journal (3, 211, where will be found references to the 

 papers of Fremy, Clans, and Haschig, which will serve for the present 

 paper). 



A slight diiferciice in procediu-e gave Fremy one or other of 

 two salts, which he named respectively hasie snlphazotate and nciiind 

 sulphazotatc, because fi"r)m tiieir chemical composition and their ready 

 passage into encli other he held them to be salts of the same acid. He 

 also described still more basic sulphazotates of potassium with barium 

 and with lead. 



