Direct Red 64
Name:C.I.Direct Red 64,C.I.17875
Molecular Structure: Single azo class
C.I.Direct Red 64,C.I.17875,CAS 6417-30-7,571.54,C26H22N5NaO7S,Diazol Light Scarlet 5B
Molecular Formula:C26H22N5NaO7S
Molecular Weight: 571.54
CAS Registry Number:6417-30-7
Manufacturing Methods : O-Anisidine diazo, and 7-(3-(4-Acetamidophenyl)ureido)-4-hydroxynaphthalene-2-sulfonic acid coupling.
Properties and Applications: red. Slightly soluble in water for red, right amount to orange soluble in alcohol. The strong sulfuric acid for purple, for the big red after diluted, precipitation. The dye solution with strong hydrochloric acid have article red precipitate; Add thick sodium hydroxide solution for red light orange brown, have precipitation.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3-4 | 3 | 3 | 1-2 | 1 | ||
List of Suppliers:
Diazol Light Scarlet 5B( Francolor Pigments SA )