Name:C.I.Acid Orange 56,C.I.22895
Molecular Structure: Double azo class
C.I.Acid Orange 56,C.I.22895,CAS 6470-20-8,728.66,C32H22N6Na2O8S2,Acid Orange GAcid Orange SG,Acid Brilliant Orange G
Molecular Formula:C32H22N6Na2O8S2
Molecular Weight: 728.66
CAS Registry Number:6470-20-8
Manufacturing Methods : 2,2′-Disulfo-4,4,diaminobibenzene double nitriding, respectively, and 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one and Naphthalen-2-ol coupling.
Properties and Applications: red light orange. Soluble in water for palm orange, soluble in ethanol for gold orange: the strong sulfuric acid for blood-red, diluted for orange brown. The dye solution to join strong hydrochloric acid have orange brown precipitation; Add thick sodium hydroxide solution for orange brown. Used for wool, silk and fiber dyeing and printing directly, also used for paper coating and leather shading.
Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
Fading | Stain | Fading | Stain | Fading | Stain | |||
ISO | 3 | 4 | 3-4 | 4 | 2 | 4-5 | 4-5 | |
AATCC | 4 | 3-4 | 3-4 | 3 | 1 | 3-4 | 3-4 | |
