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
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 )