PEROXYLAMINESULPHONATES AND BYDROXYLAMINETRI8ULPHONATES. 7 



acceptance would require that the sodium should act as a 'carrier' of 

 oxygen to the sulphonate radical. I )unstan and Goulding (Journ, t 'hem. 

 Soc. Trans., 1899, 75, 792) have found that trialkyloxamines, e.g mi 

 (CI I : ,);X:0, are reduced to trialkylamines by zinc and acid. Were meta- 

 sulphazilates also oxaminic in constitution, they too should be reduced to 

 aminetrisulphonates (nitrilosulphates). Sulphites, and even sulphur 

 dioxide have no action on the hydroxylaminetrisulphonates (p. 29). 



In the second place, the metasUlphazilates behave as sulphonated 

 hydroxylamine. They reduce acidified permanganate; they give up 

 one-third of their nitrogen in the form of ammonia when they are 

 heated with soda-lime (Claus) ; and they can be hydrolysed ultimately 

 into hydroxylamine and acid sulphate. Although very stable salts 

 in other respects, they cannot, indeed, remain in solution very long or be 

 kept for many months in the solid state without beginning to 

 hydrolyse. But if a small amount of potassium or sodium hydroxide 

 or, much more conveniently, of ammonia is added to their solution, 

 they are permanent even for years in closed vessels. The other and 

 less sulphonated hydroxylamines have no such stability, but always 

 revert more or less to sulphite and either nitrite or nitrous oxide. The 

 hydrolysis is expressed by the equation : 



(SO,K)ON(SO s K) 1 +3H f O=3H,S0 4 +HONH > . 



Taking into consideration their water of crystallisation, the 

 potassium and the ammonium hydroxylaminetrisulphonates can only 

 be written with doubled formula', thus in some degree supporting 

 Raschig's action in doubling Claus's formula for the former salt. 

 But a cryoscopic measurement (p. 33) of the molecular magnitude of 

 the sodium salt has shown that the simple formula is correct. 



/ l otassium Hydroxylaminetrisulphonatej 2(S0 3 K)ON(S0 3 K) 2 , 3H 2 0, 

 hitherto the only known salt, occurs in flattened monosymmetric 

 prisms, measurements of which have been made by Fock (Raschig). 



