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Direct Blue 30

Name:C.I.Direct Blue 30,C.I.31955

Molecular Structure: trisazo class

C.I.Direct Blue 30,C.I.31955,CAS 6656-08-2,1116.95,C44H28N6Na4O16S4

C.I.Direct Blue 30,C.I.31955,CAS 6656-08-2,1116.95,C44H28N6Na4O16S4

Molecular Formula:C44H28N6Na4O16S4

Molecular Weight: 1116.95

CAS Registry Number:6656-08-2

Manufacturing Methods :  3,3′-Dimethoxylbenzidine double nitriding, first with Naphthalen-1-amine, and then three diazo, and 8-Hydroxynaphthalene-1,6-disulfonic acid (2 Moore) coupled.

Properties and Applications: dark green light blue. Soluble in water for blue, slightly soluble in ethanol for violet blue. The strong sulfuric acid for blue-ray green, dark after diluted precipitation; In nitric acid in red for black. The dye solution to join strong hydrochloric acid blue precipitation; Add thick sodium hydroxide solution have blue precipitation.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 3-4 4 3 1-2 1-2
AATCC 5 4-5 2-3 3 1-2

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