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Direct Blue 27

Name:C.I.Direct Blue 27,C.I.23750

Molecular Structure: Double azo class

C.I.Direct Blue 27,C.I.23750,CAS 6420-15-1,828.73,C34H23N4Na3O11S3,Direct Blue 2BA,Blue F,Blue R

C.I.Direct Blue 27,C.I.23750,CAS 6420-15-1,828.73,C34H23N4Na3O11S3,Direct Blue 2BA,Blue F,Blue R

Molecular Formula:C34H23N4Na3O11S3

Molecular Weight: 828.73

CAS Registry Number:6420-15-1

Manufacturing Methods :  3,3′-Dimethylbenzidine double nitriding, respectively with the 8-Hydroxynaphthalene-1,3,6-trisulfonic acid and Naphthalen-2-ol coupling.

Properties and Applications: red light blue. Soluble in water for blue, slightly soluble in alcohol. The strong sulfuric acid for blue, rare for red light purple, have precipitation. Used for dyeing and printing of cellulose fiber, suitable for polyester/cotton, polyester/stick a bath of blended dyeing of step, it can also be used in paper color

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

List of Suppliers:

Kayacelon Blue C-3GL(Nippon Kayak u Co Ltd)

Kayafect Blue F (Nippon Kayak u Co Ltd)

Kayaku Direct Blue 2BA (Nippon Kayak u Co Ltd)

Pontamine Blue SP( Miles Inc. )

Trisulphon Blue R( Sandoz Ltd )


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