Direct Violet 43
Name:C.I.Direct Violet 43,C.I.22440
Molecular Structure: Double azo class
C.I.Direct Violet 43,C.I.22440,CAS 6426-63-7,698.63,C32H20N4Na2O8S2,Diazol Violet R
Molecular Formula:C32H20N4Na2O8S2
Molecular Weight: 698.63
CAS Registry Number:6426-63-7
Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, and 4-Hydroxynaphthalene-1-sulfonic acid (2 Moore) coupled.
Properties and Applications: red light purple. Soluble in water for purplish red color, not soluble in alcohol. The strong sulfuric acid in the dark for, for the red light purple diluted. The dye solution to join strong sodium hydroxide solution for blue-ray red.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 5 | 3 | 1 | 3-4 | 4-5 | ||
List of Suppliers:
Diazol Violet R( Francolor Pigments SA )