(3E)-5-(acetylamino)-3-{[4-(acetylamino)phenyl]hydrazono}-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid
acid violet 7
CAS: 4321-69-1
Molecular Formula: C20H16N4Na2O9S2
(3E)-5-(acetylamino)-3-{[4-(acetylamino)phenyl]hydrazono}-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid - Names and Identifiers
| Name | acid violet 7 |
| Synonyms | C.I. 18055 acid violet 7 Acid Violet 7 C.I. Food Red 11 C.I. Acid Violet 7 Acid Violet 7 (C.I.) C.I. Acid Violet 7, disodium salt C.I. Acid Violet 7, disodium salt (8CI) disodium 5-acetamido-3-(4-acetamidophenyl)azo-4-hydroxynaphthalene-2,7-disulphonate disodium 5-(acetylamino)-3-{(E)-[4-(acetylamino)phenyl]diazenyl}-4-hydroxynaphthalene-2,7-disulfonate (3E)-5-(acetylamino)-3-{[4-(acetylamino)phenyl]hydrazono}-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid disodium (3Z)-5-(acetylamino)-3-{[4-(acetylamino)phenyl]hydrazono}-4-oxo-3,4-dihydronaphthalene-2,7-disulfonate |
| CAS | 4321-69-1 |
| EINECS | 224-352-1 |
| InChI | InChI=1/C20H18N4O9S2.2Na/c1-10(25)21-13-3-5-14(6-4-13)23-24-19-17(35(31,32)33)8-12-7-15(34(28,29)30)9-16(22-11(2)26)18(12)20(19)27;;/h3-9,27H,1-2H3,(H,21,25)(H,22,26)(H,28,29,30)(H,31,32,33);;/q;2*+1/p-2/b24-23+; |
(3E)-5-(acetylamino)-3-{[4-(acetylamino)phenyl]hydrazono}-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid - Physico-chemical Properties
| Molecular Formula | C20H16N4Na2O9S2 |
| Molar Mass | 566.47 |
| Appearance | Form Powder, color Dark-brown |
| Storage Condition | Room Temprature |
| Physical and Chemical Properties | Chemical properties dark red powder. It is soluble in water, the aqueous solution is blue-red to red, and the addition of concentrated hydrochloric acid is magenta; the addition of sodium hydroxide solution is orange-brown. Slightly soluble in ethanol, acetone and glycol ether, insoluble in other organic solvents. It is blue-red in concentrated sulfuric acid and bright red after dilution; it is a red solution in concentrated nitric acid and then turns orange. When dyeing, the color of copper ions is slightly dark blue, and the color of iron ions is slightly light and dark blue; the color of chromium ions is less affected. |
| Use | Uses for wool, silk fabric and nylon fabric dyeing and leather, paper, soap, wood, medicine and cosmetics coloring, also used for biological coloring. |
(3E)-5-(acetylamino)-3-{[4-(acetylamino)phenyl]hydrazono}-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid - Risk and Safety
| WGK Germany | 2 |
| RTECS | QJ6000000 |
(3E)-5-(acetylamino)-3-{[4-(acetylamino)phenyl]hydrazono}-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid - Nature
| color index | 18055 |
| EPA chemical information | C. I. Acid Violet 7, disodium salt (4321-69-1) |
Last Update：2024-04-10 22:29:15
(3E)-5-(acetylamino)-3-{[4-(acetylamino)phenyl]hydrazono}-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid - Uses and synthesis methods
introduction
acid fuchsin 6B is abbreviated as acid red 6B. it is an acid dye. it is commonly used as colorant in chemical raw materials for soap making and dye in leather chemicals. it is dark red powder at room temperature. Soluble in water is blue red to magenta, slightly soluble in ethanol, acetone and fibrinolytic, insoluble in other organic solvents. It is blue-red when exposed to concentrated sulfuric acid, bright red when diluted, and turns orange when exposed to concentrated nitric acid. The aqueous solution with concentrated hydrochloric acid is magenta, and the sodium hydroxide solution is orange brown. When dyeing, the color of copper and iron ions is slightly blue and dark, while the latter is slightly light, which is rarely affected by chromium ions. Good levelness. Acid fuchon 6B is obtained by diazotization of p-aminoacetanilide and coupling with the product after acetylation of H acid.
application
acid fuchsin 6B molecular formula is C20H16N4Na2O9S2, which is dark red powder. it needs to be protected from light, ventilated and dry, sealed and stored. it is used for dyeing wool, silk fabric and nylon fabric, coloring leather, paper, soap, wood, medicine and cosmetics, and biological coloring.
use
acid purplish red B can be used for dyeing wool, silk and nylon with good levelness. it is also used for coloring leather, paper, soap, wood products, biological products, medicine and cosmetics, and as a food colorant.
production method
1. Diazotization with aminoacetanilide, coupling with acetyl H acid, and salting out. Raw material consumption (kg/t) h acid (100%) 450 p-acetanilide 189 acetic anhydride 196 sodium carbonate (98%) 484 sodium nitrite (98%) 90 industrial salt 864 hydrochloric acid (31%) 456 taikoo oil 4
2. paracetamilide (p-aminoacetanilide) and N-acetyl H acid are used as raw materials to diazotize paracetamilide and couple with N-acetyl H acid to obtain the product. Salted out, filtered, dried and crushed
Last Update：2024-04-10 22:29:15
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CAS: 4321-69-1
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CAS: 4321-69-1
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Mobile: 18021002903
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