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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 BLACK 22 |
| Synonyms: | C.1.DirectBlack22(35435);C.I.Directblack22;ChlorazolBlackGF;CuproqixBlackNF;DiazolFastBlackJ;DirectfastblackGF;DirectlightblackGF;PONTAMINE FAST BLACK PGR |
| CAS: | 6473-13-8 |
| MF: | C44H32N13Na3O11S3 |
| MW: | 1083.97 |
| EINECS: | 229-326-3 |
| Product Categories: | Organics;Dyes and Pigments |
| Mol File: | 6473-13-8.mol |
| form | Powder |
| color | Black |
| CAS DataBase Reference | 6473-13-8 |
| EPA Substance Registry System | C.I. Direct Black 22 (6473-13-8) |
| Chemical Properties | black powder | |||||||||||||||||||||||||||
| Direct Black 22 is a polyimidazolium salt and an organic dye used in the textile industry. Direct Black 22 is considered a water pollutant, and is removed from wastewater by degradation. | ||||||||||||||||||||||||||||
| Preparation | 5-Amino-2-(4-aminophenylamino)benzenesulfonic acid double nitriding, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? (2 Moore) coupled, then double nitriding, and Benzene-1,3-diamine (2 Moore) coupled. | |||||||||||||||||||||||||||
green and black. Blue gray powder. Soluble in water for violet black. The strong sulfuric acid for violet black, dilute black light after brown precipitation; In nitric acid solution for the red light brown in, precipitation. The dye solution to join strong hydrochloric acid have brown light black precipitation; Add thick sodium hydroxide solution for dark blue light red. Mainly used for cotton, viscose, wool/stick,nylon/rayon blended fabric dyeing and printing, also used in leather and paper dyeing.
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| Raw materials | Diphenylamine-->m-Phenylenediamine-->5-Amino-2-[(4-aminophenyl)amino]benzenesulfonic acid-->6-Amino-4-hydroxy-2-naphthalenesulfonic acid-->m-Phenylenediamine |
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