Benzenesulfonic acid, 2,2'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis[4-amino-, disodium salt

CAS NO.：6420-34-4
Empirical Formula: C29H31N8NaO9S2
Molecular Weight: 722.72
EINECS: 613-502-5

What is Benzenesulfonic acid, 2,2'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis[4-amino-, disodium salt?

Preparation

2-Amino-4-formamidobenzenesulfonic acid?diazo, and 2-Amino-4-methylanisole coupling, and then with water and light acyl gasification.

Properties and Applications

yellow. Moderate soluble in water for gold orange, slightly soluble in ethanol for yellow. The strong sulfuric acid in blue, diluted light gray for subtle stitching. The dye solution to join strong hydrochloric acid for dark brown precipitation; Add thick sodium hydroxide colour and lustre is no change.

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

Safety information for Benzenesulfonic acid, 2,2'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis[4-amino-, disodium salt

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