ON OXYAMIDOSULPHOXATES. 217 



(HONHS0 3 ) 2 Ba,OH 2 a. b. I). C. 



Barnim 36.15 36.17 36.27 35.88 35.53 



Sulphur 16.88 16.84 16.65 16.49 



Oxyamidogen, 16.88 16.50 



The hydrolysis of oxyamidosulphonic acid. 



Although oxyamidosulphonic acid possesses relative stability, 

 the fact that its solution does decompose was fully noticed by Fremy. 

 Rasch ig has found that the decomposition proceeds sharply and, in 

 presence of hot acid, rapidly, according to the equation — 



2HONHS0 3 H+2H 2 = (NH 3 OH) 2 SO,+ H 2 S0 4 

 and with this important finding we fully agree from experience, and 

 to it have nothing to add. Fremy stated that when boiled with 

 water the acid decomposes wholly into acid-ammonium sulphate and 

 oxygen or hydrogen -peroxide. His finding ammonia and oxygen 

 (or any gas) cannot be explained. He appears to have tested for 

 hydrogen-peroxide by adding manganese binoxide which would ac- 

 count for his finding it, since an effervescence of nitrons oxide could 

 easily pass for one of oxygen. 



Clans expressed his hesitation to accept Fremy's equation (modi- 

 fied)— 2HONH(S0 3 H) + 2H,0 = 2(NH 4 )HS0 4 +0 2 , as quantitative, 

 but at the same time admitted that he had also obtained (besides 

 sulphuric acid) ammonia and oxygen (or nitrous oxide.) Raschid 

 has got other results, as already stated, and in these both ammonia 

 and either oxygen or nitrous oxide, are absent. These inexplicable 

 differences have their parallel in what is contained in the next sec- 

 tion of this paper, only there the differences announced are between 

 ourselves and the other workers. 



