Reducible and non-reoxidisable dyestuffs

The solution of the colouring matter is coloured orange with alkali the colouring matter deflagrates when heated wool Is dyed in an acid bath Nitro colouring matters. 

Ether dees not extract the Colour from the alkaline solution Nitrophenols. 

Ether does not extract the colour from the acid solution SulphonaUd, 

The alcoholic solution gives a bhie coloration with phenol and cone. 

The solution does not give the reactions indicated, for the two preceding subdivisions Azo azoxy- and hydrazo-colouring matters. 

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