Benzenesulfonic acid, hydroxy[(2-hydroxy-1-naphthalenyl)azo]methyl-, monosodium salt (9CI)

CAS NO.：1323-90-6
Empirical Formula: C17H14N2O5S.Na
Molecular Weight: 380.35

What is Benzenesulfonic acid, hydroxy[(2-hydroxy-1-naphthalenyl)azo]methyl-, monosodium salt (9CI)?

Preparation

including amino, hydroxyl and methyl of Benzenesulfonic acid diazotization, and Naphthalen-2-ol coupling.

Properties and Applications

brilliant blue purple. Soluble in hot water to red. In concentrated sulfuric acid to red light brown, dilution after brown precipitation. Dye aqueous solution to join concentrated hydrochloric acid with brown precipitation; Add sodium hydroxide solution color constant.

Standard	Ironing Fastness	Light Fastness	Fulling		Persperation Fastness	Soaping	Water
Standard	Ironing Fastness	Light Fastness	Alkali	Acid	Persperation Fastness	Soaping	Water
ISO	3	7	4-5	3	5	5	5
AATCC	4-5	5-6	4-5		4-5

Safety information for Benzenesulfonic acid, hydroxy[(2-hydroxy-1-naphthalenyl)azo]methyl-, monosodium salt (9CI)

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