Acid Orange 55
Name:C.I.Acid Orange 55,C.I.24765
Molecular Structure: Double azo class
Molecular Formula:C35H26N4Na2O8S2
Molecular Weight: 740.71
CAS Registry Number:6459-66-1
Manufacturing Methods : 4-(4-Amino-2-methylbenzyl)-3-methylbenzenamine nitriding, and methane 6-Hydroxynaphthalene-2-sulfonic acid (2 Moore) coupled.
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 orange for palm. In aqueous solution is to add strong hydrochloric acid have the red orange precipitation; Add thick sodium hydroxide solution for orange brown. Used for wool, silk fiber dyeing, etc. Also used in paper shading.
Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
Fading | Stain | Fading | Stain | Fading | Stain | |||
ISO | 3 | 4 | 3 | 2-3 | 3 | 3-4 |
List of Suppliers:
Brilliant Milling Orange GR ( Carbotex Consultants )
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