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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 Violet 12 |
| Synonyms: | C.I. Direct violet 12;Japanol Violet Extra;Mitsui Direct Violet R;Oiacotton Ciolet X;3,3'-[(1,1'-Biphenyl-4,4'-diyl)bis(azo)]bis[7-amino-4-hydroxy-2-naphthalenesulfonic acid sodium] salt;C.I.22550;Direct Violet O;Direct Violet 12 |
| CAS: | 2429-75-6 |
| MF: | C32H25N6NaO8S2 |
| MW: | 708.7 |
| EINECS: | |
| Product Categories: | |
| Mol File: | 2429-75-6.mol |
| EPA Substance Registry System | 2-Naphthalenesulfonic acid, 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis[7-amino-4-hydroxy-, disodium salt (2429-75-6) |
| Preparation | 4-(4-Aminophenyl)benzenamine double nitriding, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid (2 Moore) coupled. | |||||||||||||||||||||||||||
purple. Deep smoked uniform powder. Soluble in water for violet black, soluble in ethanol for product red. In the strong sulfuric acid as dark blue, diluted into dark purple. The dye solution to join strong hydrochloric acid for Red sauce or violet black, precipitation; Add thick sodium hydroxide solution for violet black, precipitation. Cellulose fiber of dyeing, the dye devoured the gender is good, in the 80 ~ 100 ℃ maximum when affinity. Hard to more sensitive. Mainly used for cotton, cellulose fiber fabrics such as glue of dyeing, also can be used for paper dyeing.
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| Raw materials | Benzidine-->J acid |
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