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Direct Black 97

Name:C.I.Direct Black 97,C.I.35810

Molecular Structure: Multi-azo class

C.I.Direct Black 97,C.I.35810,CAS 6409-86-5,1082.80,C42H26N10Na4O16S2

C.I.Direct Black 97,C.I.35810,CAS 6409-86-5,1082.80,C42H26N10Na4O16S2

Molecular Formula:C42H26N10Na4O16S2

Molecular Weight: 1082.80

CAS Registry Number:6409-86-5

Manufacturing Methods :  5-Amino-2-hydroxybenzoic acid diazotization, and 8-Aminonaphthalene-2-sulfonic acid coupling, product and diazotization, and 2,5-Dimethoxyaniline coupling, and then re-bis-azo compound nitriding, and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, and in acidic conditions with diazotized 2-Amino-5-nitrobenzoic acid coupling.

Properties and Applications: blue ash.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 3 3-4 6 5 5
AATCC 7 4-5

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