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
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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