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Direct Blue 230

Name:C.I.Direct Blue 230,C.I.22455

Molecular Structure: Double azo class

C.I.Direct Blue 230,C.I.22455,CAS 6527-65-7,815.7,C32H20N5Na3O11S3

C.I.Direct Blue 230,C.I.22455,CAS 6527-65-7,815.7,C32H20N5Na3O11S3

Molecular Formula:C32H20N5Na3O11S3

Molecular Weight: 815.7

CAS Registry Number:6527-65-7

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling, and then and 4-Hydroxynaphthalene-1-sulfonic acid coupling.

Properties and Applications: blue

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 5 4 1-2 1-2 1-2

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