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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 Black 234 |
| Synonyms: | 2, 7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[[4-[(2, 4-diaminophenyl)azo]phenyl]sulfonyl]amino]phenyl]azo]-5-hydroxy-6-(phenylazo), disodium salt;Acid Black BA;Acid Black NBG;Acid Black NB-G;Apollo Leather Black NGRL;C.I.Acid Black 234;Coriamine Black NB-G;Dynacid Black 2N |
| CAS: | 157577-99-6 |
| MF: | C34H29N10NaO9S3 |
| MW: | 840.84 |
| EINECS: | 605-104-5 |
| Product Categories: | |
| Mol File: | 157577-99-6.mol |
| density | 1.193[at 20℃] |
| vapor pressure | 0Pa at 25℃ |
| pka | 7.62[at 20 ℃] |
| Water Solubility | 215g/L at 20℃ |
| LogP | -1.86 at 20℃ |
| CAS DataBase Reference | 157577-99-6(CAS DataBase Reference) |
| EPA Substance Registry System | 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[[4-[(2,4-diaminophenyl)azo]phenyl]sulfonyl]amino]phenyl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt (157577-99-6) |
| Preparation | 4-Amino-N-(4-aminophenyl)benzenesulfonamide double nitriding,sulfonylurea aniline in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidcoupling, aniline diazo, and the above the products in alkaline conditions coupling, and then Benzene-1,3-diamine coupled. |
| Non flammable | |
| Properties and Applications | black. Mainly used for wool, silk, cotton and glue dyeing, also can be used for leather dyeing. |
| Raw materials | Aniline-->m-Phenylenediamine-->Benzenesulfonanilide-->4,4'-Diaminobenzenesulphanilide-->Aniline-->8-Amino-1-naphthol-3,6-disulfonic acid monosodium salt monohydrate-->m-Phenylenediamine |
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