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Acid Blue 87

Name:C.I.Acid Blue 87,C.I.20415

Molecular Structure: Double azo class

C.I.Acid Blue 87,C.I.20415,CAS 1330-38-7,640.39,C22H13Cl2N5Na2O7S2

C.I.Acid Blue 87,C.I.20415,CAS 1330-38-7,640.39,C22H13Cl2N5Na2O7S2

Molecular Formula:C22H13Cl2N5Na2O7S2

Molecular Weight: 640.39

CAS Registry Number:1330-38-7

Manufacturing Methods : o-Chloroaniline diazo, and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid in acid conditions coupled, then and diazo neighborhood M-chloroaniline in alkaline conditions coupled.

Properties and Applications: navy blue. Slightly soluble in water and acetone, soluble in ethanol. The strong sulfuric acid for purple, diluted to blue. In water solution to join strong hydrochloric acid blue precipitation, add sodium hydroxide as dark blue.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 3-4 2-3 3 4

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