Pyrrole blue

C.I.Basic violet 14 (C.I. 42510) and Naphthalen-2-amine heating together,And its product disulfonated and converted to the sodium salt.

colourful green light blue. Slightly soluble in cold water, soluble in hot water for green blue, not soluble in alcohol. The strong sulfuric acid to red light brown, after diluted blue precipitation. The dye solution to join sodium hydroxide solution into violet black, accompanied by precipitation.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	3-4	1	1	1		1
AATCC	2-3	1	1	1		1