6-Amino-4-hydroxy-3-[[4-(phenylazo)-1-naphtyl]azo]-2-naphthalenesulfonic acid sodium salt

CAS NO.：6227-04-9
Molecular Weight: 520.52
Update Date: 2023-05-09 09:30:35

What is 6-Amino-4-hydroxy-3-[[4-(phenylazo)-1-naphtyl]azo]-2-naphthalenesulfonic acid sodium salt?

Preparation

aniline diazo, and Naphthalen-1-amine coupling, again diazo, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? coupling.

Properties and Applications

red light grey. Moderate soluble in water for violet and grey or black, slightly soluble in alcohol. ?In concentrated sulfuric acid for the gray light blue (plus purple), diluted red for sauce. Dye with strong hydrochloric acid solution for red sauce; Add thick sodium hydroxide solution for green light black, with precipitation.

Standard(cotton)	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
Standard(cotton)	Acid Resistance	Alkali Resistance	Light Fastness	Fading	Stain	Fading	Stain
ISO	3	5	3	2-3		2
AATCC	3	2	2-3	3-4		1

Safety information for 6-Amino-4-hydroxy-3-[[4-(phenylazo)-1-naphtyl]azo]-2-naphthalenesulfonic acid sodium salt

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