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| OEM | OEM Services Provided |
| Feature | Good stability,Easy to Use |
| Classification | Dyes and Pigments |
| Advantage | Professional, Fast Delivery, Customizable | Samples | Apply for free，Contact us now. |
| Product Name: | Direct Red 23 |
| Synonyms: | BENZO FAST SCARLET;CI 29160;DIRECT FAST SCARLET 4BS;DIRECT RED 23;Disodium 3-[(4-acetamidophenyl)azo]-4-hydroxy-7-[[[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]amino]carbonyl]amino]naphthalene-2-sulphonate;2-naphthalenesulfonicacid,3-((4-(acetylamino)phenyl)azo)-4-hydroxy-7-((((5-hy;2-naphthalenesulfonicacid,3-[[4-(acetylamino)phenyl]azo]-4-hydroxy-7-[[[[5-hy;airedalescarlet4bd |
| CAS: | 3441-14-3 |
| MF: | C35H28N7NaO10S2 |
| MW: | 793.76 |
| EINECS: | 222-348-4 |
| Product Categories: | D;Stains and Dyes;Stains&Dyes, A to;Organics;Dyes and Pigments |
| Mol File: | 3441-14-3.mol |
| storage temp. | room temp |
| Colour Index | 29160 |
| form | powder |
| λmax | 507 nm |
| ε(extinction coefficient) | ≥15000 at 500-516nm in water at 0.04g/L |
| Cosmetics Ingredients Functions | HAIR DYEING |
| CAS DataBase Reference | 3441-14-3(CAS DataBase Reference) |
| EPA Substance Registry System | C.I. Direct Red 23, disodium salt (3441-14-3) |
| WGK Germany | 2 |
| RTECS | QK1237500 |
| Provider | Language |
|---|---|
| SigmaAldrich | English |
| Uses | Direct Red 23 has been used to stain water-hydrated seeds. | |||||||||||||||||||||||||||
| aniline and N-(4-aminophenyl)acetamide diazo respectively, and N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea coupling. | ||||||||||||||||||||||||||||
| Hazard | Low toxicity by ingestion. | |||||||||||||||||||||||||||
red. Purple powder. Soluble in water for colourful red, solubility of 30 g/L (80 ° C), soluble in ethanol for orange, insoluble in acetone. The strong sulfuric acid was great red to product red, diluted light orange for palm. The dye solution to generate strong hydrochloric acid wine red precipitate; Add 10% sulfuric acid into a light blue; Add thick sodium hydroxide solution for red orange; Add 10% sodium carbonate (no change solution. Cellulose fiber of dyeing, dye devoured rate is very good, in the 80 ~ 100 ℃, affinity is the largest. Resistant to acid is very good. Copper ions in dyeing color shade darker; Iron ion in the same light. Mainly used in viscose etc of cellulose fiber dyeing, also can be used for silk, wool, paper and pulp dyeing, also can be used in the manufacture color which have pigment.
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| Raw materials | Sodium nitrite-->Sodium chloride-->Water-->4'-Aminoacetanilide-->4-Aminoacetophenone-->6,6'-Ureylene-bis(1-naphthol-3-sulfonic acid)-->5,5'-Dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid-->6,6'-Ureylene-bis(1-naphthol-3-sulfonic acid)-->Aniline-->4'-Aminoacetanilide |
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