2-Naphthalenesulfonic acid, 3,3'-[azoxybis(3,1-phenyleneazo)]bis[7-amino-4-hydroxy-, disodium salt
- CAS NO.:6661-22-9
- Empirical Formula: C32H25N8NaO9S2
- Molecular Weight: 752.71
- EINECS: 613-954-3
What is 2-Naphthalenesulfonic acid, 3,3'-[azoxybis(3,1-phenyleneazo)]bis[7-amino-4-hydroxy-, disodium salt?
Preparation
(a), M-nitroaniline diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, then use glucose and sodium hydroxide solution will nitro reduction; (b) 3-(3-(3-Aminophenyl)-1-oxadiaziridin-2-yl)benzenamine?double nitriding, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid (2 Moore) coupled.
Properties and Applications
dark red Claret to light purple. Soluble in water for palm light orange, slightly soluble in alcohol. The strong sulfuric acid for blu-ray red, diluted light orange for subtle stitching. The dye solution to join strong hydrochloric acid for red orange; Add thick sodium hydroxide solution for palm light orange
Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
Fading | Stain | Fading | Stain | ||||
ISO | 4 | 3 | 1 | 4 | 4-5 | ||
AATCC | 5 | 5 | 2 | 3 | 4 |
Safety information for 2-Naphthalenesulfonic acid, 3,3'-[azoxybis(3,1-phenyleneazo)]bis[7-amino-4-hydroxy-, disodium salt
Related products of tetrahydrofuran
BRILLIANT PURPURIN R
2-Naphthalenesulfonic acid, 7-[(4-aminobenzoyl)amino]-3-[[4-[(4-aminobenzoyl)amino]-2-sulfophenyl]azo]-4-hydroxy-, disodium salt
disodium 5-[[4-[[6-[(4-amino-3-methylbenzoyl)amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]-3-methylbenzoyl]amino]salicylate
disodium 7-[(3-aminobenzoyl)amino]-4-hydroxy-3-[[4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate
DIRECT RED 149
3-[[4-[[6-[(4-Aminobenzoyl)amino]-1-hydroxy-3-sulfo-2-naphtyl]azo]-3,5-dimethylphenyl]azo]-1,5-naphthalenedisulfonic acid trisodium salt
disodium 7-[[3-[(4-aminobenzoyl)amino]benzoyl]amino]-4-hydroxy-3-[[4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate
Direct Red 154
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