Acid Orange 79
Name:C.I.Acid Orange 79,C.I.23255
Molecular Structure: Double azo class
Molecular Formula:C34H27N5Na2O9S2
Molecular Weight: 759.72
CAS Registry Number:6470-37-7
Manufacturing Methods : 4-(4-Amino-2-methylphenyl)-3-methylbenzenamine double nitriding, respectively with the 7-Hydroxynaphthalene-1,3-disulfonic acid and 3-Oxo-N-phenylbutanamide coupling.
Properties and Applications: red light orange. Soluble in water for orange, soluble in ethanol for gold orange, slightly soluble in benzene and acetone. The strong sulfuric acid in red orange for, to orange diluted. The dye solution to join strong hydrochloric acid for orange; Add thick sodium hydroxide solution for yellow light brown. Used for wool, silk and fiber dyeing and printing directly.
Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
Fading | Stain | Fading | Stain | Fading | Stain | |||
ISO | 4 | 3-4 | 3-4 | 3-4 | 2-3 | 4-5 |
List of Suppliers:
Supranol Fast Orange RR( Bayer Group )