1,6-Naphthalenedisulfonic acid, 8-hydroxy-7-[[4-(6-methyl-2-benzothiazolyl)phenyl]azo]-, disodium salt

CAS NO.：5858-74-2
Empirical Formula: C24H15N3Na2O7S3
Molecular Weight: 599.56634
EINECS: 611-710-0

What is 1,6-Naphthalenedisulfonic acid, 8-hydroxy-7-[[4-(6-methyl-2-benzothiazolyl)phenyl]azo]-, disodium salt?

Preparation

4-(6-Methyl-2,3-dihydrobenzo[d]thiazol-2-yl)benzenamine diazo, and 8-Hydroxynaphthalene-1,6-disulfonic acid coupling.

Properties and Applications

blue light pink. Soluble in water for pink to red, and adequate soluble in alcohol. The strong sulfuric acid to red light purple, for dark orange red after diluted. The dye solution to join strong hydrochloric acid have big red precipitate; Add thick sodium hydroxide solution have sauce red precipitate.

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

Safety information for 1,6-Naphthalenedisulfonic acid, 8-hydroxy-7-[[4-(6-methyl-2-benzothiazolyl)phenyl]azo]-, disodium salt

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