2-Naphthalenesulfonic acid, 5,5'-[methylenebis[(3-methyl-4,1-phenylene)azo]]bis[6-hydroxy-, disodium salt
2-Naphthalenesulfonic acid, 5,5'-[methylenebis[(3-methyl-4,1-phenylene)azo]]bis[6-hydroxy-, disodium salt Basic information
- Product Name:
- 2-Naphthalenesulfonic acid, 5,5'-[methylenebis[(3-methyl-4,1-phenylene)azo]]bis[6-hydroxy-, disodium salt
- Synonyms:
-
- 2-Naphthalenesulfonic acid, 5,5'-[methylenebis[(3-methyl-4,1-phenylene)azo]]bis[6-hydroxy-, disodium salt
- Acid Orange 55
- C.I.Acid Orange 55:C.I.24765
- CAS:
- 6459-66-1
- MF:
- C35H29N4NaO8S2
- MW:
- 720.75
- EINECS:
- 613-628-0
- Mol File:
- 6459-66-1.mol
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2-Naphthalenesulfonic acid, 5,5'-[methylenebis[(3-methyl-4,1-phenylene)azo]]bis[6-hydroxy-, disodium salt Usage And Synthesis
Preparation
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 | ||