ril;..\Yl.\M!M M I ril.'N A MS AM» HYDROXY I.AMl.NKTRISULrilnNA'I'KS. \~ 



aminedisulphonate which is regenerated by the independenl 



decomposition of the peroxylaminesulphonate is oxidised ngain to 

 more of this salt, to be ngain decomposed in the same way, until the 

 whole of the disulphonate has become trisulphonate und nitrite, 

 except that part of it which is lost as sulphate and nitrous oxide. 

 Remembering that l(S0 3 K) 2 NOH gives 2(S0 3 K) 4 N 2 CL the larger 

 yield of hydroxylaminetrisulphonate which should result will be 

 seen, on comparing the equation on page 5 with that just given, to 

 be theoretically as 4 to o. It will now, too, be evident, on reference 

 to Claus's memoir, that his incomplete knowledge of the nature of the 

 decomposition of the peroxylaminesulphonate led him to object too 

 much to Fremy's account of the action of the oxidising agent in 

 producing hydroxylaminetrisulphonate. 



Constitution. — The constitution of a peroxylaminesulphonate as a 

 sulphonate was recognised by Claus, and is deducible from the fact 

 that it is formed by the dehydrogenation of hydroxylaminedisul- 

 phonate. The problem of its constitution as a nitroxy-compound 

 remains to be solved, and the description just given of the potassium 

 salt amounts to a demonstration, first, that its constitution is that of 

 a peroxide and therefore of a peroximide ; and, secondly, that its 

 nitrogen is trivalent. 



Among the facts bearing on its constitution as a peroxylamine, 

 that is, as a derivative of 1LXOÜXH,, are, first, those of its mode of 

 formation. The 2/3-normal hydroxylaminedisulphonate loses its 

 two hydrogen atoms, at the ordinary temperature and when it is in 

 aqueous solution, by the action of ozone, lead peroxide, silver 

 oxide, and a variety of other substances : 



(S0 3 K) 2 XOH + HON(S03K) 2 ^(S0 3 K) 2 NO-ON(S03K) 2 , 

 but not, however, by oxygen itself, for Kaschig's observation, that a 

 solution of hydroxylaminedisulphonate, when exposed to the air may 



