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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: | Acid Red 137 |
| Synonyms: | sodium 7-(acetylamino)-3-[[4-(acetylamino)phenyl]azo]-4-hydroxynaphthalene-2-sulphonate;Acid red 137 (C.I. 17755);Scarlet A;Blackley Fast Paper Scarlet N;Acid Red 137 ISO 9001：2015 REACH;C.I.Acid Red 137:C.I.17755;2-Naphthalenesulfonic acid, 7-(acetylamino)-3-[2-[4-(acetylamino)phenyl]diazenyl]-4-hydroxy-, sodium salt (1:1) |
| CAS: | 6222-63-5 |
| MF: | C20H18N4O6S.Na |
| MW: | 465.44 |
| EINECS: | 228-307-7 |
| Product Categories: | |
| Mol File: | 6222-63-5.mol |
| EPA Substance Registry System | 2-Naphthalenesulfonic acid, 7-(acetylamino)-3-[[4-(acetylamino)phenyl]azo]-4-hydroxy-, monosodium salt (6222-63-5) |
| Preparation | N-(4-aminophenyl)acetamide diazo, and ?7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling. | |||||||||||||||||||||||
yellow light red. Soluble in water for red, red orange for adequate soluble in alcohol. The strong sulfuric acid for product red, diluted into yellow orange. In water solution to join after strong hydrochloric acid red brown precipitation; Add thick sodium hydroxide solution into a yellow brown.
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