Acid Red 158
Name:C.I.Acid Red 158,C.I.20530
Molecular Structure: Double azo class
C.I.Acid Red 158,C.I.20530,CAS 8004-55-5,Fast Red FR,Fast Red ER
Molecular Formula:
Molecular Weight:
CAS Registry Number:8004-55-5
Manufacturing Methods : aniline and p-Methylaniline diazo, and 5-Hydroxy-4-(2-hydroxynaphthalene-7-sulfonamido)naphthalene-1,7-disulfonic acid coupling.
Properties and Applications: red. Red powder, soluble in water, slightly soluble in ethanol for orange. The strong sulfuric acid dyes are cherry red, dilute to orange. The water solution is orange. Add after strong hydrochloric acid color unchanged; Add thick sodium hydroxide solution to orange brown. Used for wool, silk and their blended fabric dyeing and printing.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 4 | 4 | 3-4 | 3-4 | 2-3 | 4 | ||
List of Suppliers:
Ricoamide Fast Red FR ( Classic Dyestuffs Inc )
Telon Fast Red ER( Classic Dyestuffs Inc )