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Direct Red 173
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Direct Red 173 ??
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4-Amino-3-hydroxy-7-nitronaphthalene-1-sulfonic acid diazo, and 1-(4-Aminophenyl)-3-methyl-1H-pyrazol-5(4H)-one?coupling, and then make the light gasification.Properties and Applications
dark red. Soluble in water for red light brown, and adequate soluble in alcohol. For the strong sulfuric acid in orange, yellow for red after diluted. The dye solution to join strong sodium hydroxide solution for orange brown; Join strong hydrochloric acid is palm light orange, precipitation.| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3-4 | 5 | 6 | 4 | 4-5 | ||
| AATCC | 5 | 4 | 6-7 | 4-5 | 5 | ||
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Chloramine Rubine
C.I. Direct Red 169, disodium salt
DIRECT RED 16
2-Hydroxy-5-[[4'-[(2-hydroxy-3,6-disulfo-1-naphtyl)azo]-1,1'-biphenyl-4-yl]azo]benzoic acid trisodium salt
[4-Chloro-2-[[1-hydroxy-6-[[4-[(8-hydroxy-5-quinolinyl)azo]benzoyl]amino]-3-sulfo-2-naphtyl]azo]phenoxy]acetic acid
Benzoic acid, 5-[[4-[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]benzoyl]amino]phenyl]azo]-2-hydroxy-, disodium salt
Naphtho[2,1-d]thiazole-8-sulfonic acid, 2-(3-aminophenyl)-7-[(2,4-dimethylphenyl)azo]-6-hydroxy-, monosodium salt
7,7'-(Carbonyldiimino)bis[4-hydroxy-3-[(2-hydroxy-5-nitrophenyl)azo]-2-naphthalenesulfonic acid]disodium salt
disodium 5-[[4-[[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]phenyl]amino]carbonyl]phenyl]azo]salicylate