Direct Blue 29
Name:C.I.Direct Blue 29,C.I.27890
Molecular Structure: Double azo class
C.I.Direct Blue 29,C.I.27890,736.64,C30H22N6Na2O10S2,Icyl Blue 2R
Molecular Formula:C30H22N6Na2O10S2
Molecular Weight: 736.64
CAS Registry Number:
Manufacturing Methods : 2-Amino-5-nitrobenzenesulfonic acid diazo, and 2-Amino-4-methylanisole coupling, again diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.
Properties and Applications: blue-ray red. Soluble in water and ethanol is purple. The strong sulfuric acid for yellow green, diluted is shallow brown. The dye solution to join strong sodium hydroxide solution for blue light green, a black light blue precipitation.
| Standard(Viscose) | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| AATCC | 3 | 3-4 | 4 | 3 | 3 | ||
List of Suppliers:
Icyl Blue 2R ( Imperial Chemical Industries )