Direct Blue 19
Name:C.I.Direct Blue 19,C.I.22485
Molecular Structure: Double azo class
C.I.Direct Blue 19,C.I.22485,CAS 6426-68-2,713.65,C32H21N5Na2O8S2,Direct Blue 3R
Molecular Formula:C32H21N5Na2O8S2
Molecular Weight: 713.65
CAS Registry Number:6426-68-2
Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, and Naphthalen-2-ol coupling, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling.
Properties and Applications: Red light blue and red light navy blue.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 5 | 5 | 1 | 2 | 2 | ||
List of Suppliers:
Direct Blue 3R( Aziende Colon Nazionali Affini (ACNA) )