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HomeProduct name listDirect Black 166

Direct Black 166

Direct Black 166 Structural

What is Direct Black 166?

Preparation

4-Amino-N-(4-aminophenyl)benzamide double nitriding, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupled, aniline diazo, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?group of neighborhood, a coupling again with Benzene-1,3-diamine coupling.

Properties and Applications

black. Used for cellulose fiber dyeing and printing, also can be used for leather dyeing. Is C.I. Direct Black 38 substitutes.

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

Properties of Direct Black 166

CAS DataBase Reference 57131-19-8
EPA Substance Registry System 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[[4-[(2,4-diaminophenyl)azo]phenyl]amino]carbonyl]phenyl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt (57131-19-8)

Safety information for Direct Black 166

Computed Descriptors for Direct Black 166

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