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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

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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