Direct Violet 42
Name:C.I.Direct Violet 42,C.I.22450
Molecular Structure: Double azo class
C.I.Direct Violet 42,C.I.22450,CAS 6459-88-7,713.65,C32H21N5Na2O8S2,Blue 04G,Violet B
Molecular Formula:C32H21N5Na2O8S2
Molecular Weight: 713.65
CAS Registry Number:6459-88-7
Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, And 4-Hydroxynaphthalene-1-sulfonic acid and in acetic acid medium, and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.
Properties and Applications: purple. Soluble in water for red light purple, soluble in alcohol. In the strong sulfuric acid as dark blue, diluted red for sauce. The dye solution to join strong hydrochloric acid for dark purple; Add thick sodium hydroxide solution for red wine.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3 | 4-5 | 2 | 2-3 | 2-3 | ||
List of Suppliers:
Arlindone Blue 04G( Arlabs Ltd )
Oxydiamine Violet B( Carbotex Consultants )