Acid Black 32
Name:C.I.Acid Black 32,C.I.26990
Molecular Structure: Double azo class
C.I.Acid Black 32,C.I.26990,CAS 3682-47-1,774.64,C30H17N4Na3O11S3
Molecular Formula:C30H17N4Na3O11S3
Molecular Weight: 774.64
CAS Registry Number:3682-47-1
Manufacturing Methods : 4-Aminonaphthalene-1-sulfonic acid diazo, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling, its product to diazo, and Naphthalen-2-ol coupling.
Properties and Applications: green and black. Soluble in water for black, soluble in ethanol, slightly soluble in soluble fiber element. The strong sulfuric acid as dark blue light in purple, diluted solution for olive. In water solution to join 10% of sulfuric acid discoloration; Add 10% sodium hydroxide solution for dark blue light red.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 4 | 4 | 4 | 3-4 | 4 | |||
| AATCC | 7 | 3 | 3 | 3 | 4-5 | |||
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