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N-2,6-dimethylphenyl-2-naphthylamineand N,N-diethyl-4-nitrosobenzenamine reaction, the products and2-(N-ethylamino)-5-diaminotoluenecondensation, in addition add N,N-diethyl-4-nitroso-o-toluidineas oxidant, garnish with 32% of hair smoke two stlfonation sulfuric acid, and finally into sodium salt.

blue. For violet is soluble in water, soluble in ethanol to blue. The strong sulfuric acid for green, diluted into purple. In aqueous solution for wine red and join sodium hydroxide with precipitation; Join hydrochloric acid as red wine.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	4	3	3	3-4	3-4		3