2379-81-9
Vat Black 27
CAS: 2379-81-9
Molecular Formula: C42H23N3O6
2379-81-9 - Names and Identifiers
| Name | Vat Black 27 |
| Synonyms | C.I. 69005 Vat Black 27 C.I. Vat Black 27 |
| CAS | 2379-81-9 |
| EINECS | 219-169-9 |
| InChI | InChI=1/C42H23N3O6/c46-37-23-15-7-9-17-25(23)39(48)33-31(37)29(43-41(50)21-11-3-1-4-12-21)19-27-28-20-30(44-42(51)22-13-5-2-6-14-22)32-34(36(28)45-35(27)33)40(49)26-18-10-8-16-24(26)38(32)47/h1-20,45H,(H,43,50)(H,44,51) |
2379-81-9 - Physico-chemical Properties
| Molecular Formula | C42H23N3O6 |
| Molar Mass | 665.648 |
| Density | 1.537g/cm3 |
| Boling Point | 685.54°C (rough estimate) |
| Refractive Index | 1.831 |
| Physical and Chemical Properties | Chemical properties black powder. Insoluble in water, acetone, ethanol, toluene, xylene, slightly soluble in chloroform, pyridine, soluble in o-chlorophenol. It is red in concentrated sulfuric acid, and fluorescent olive green precipitate is produced after dilution. It is red and brown in the alkaline solution of hydrosulfite and yellow and brown in the acidic solution. |
| Use | 1, the reduction of Olive R is mainly used for cotton fiber dyeing, levelness is very good, good affinity. It can also be used for dyeing viscose fiber, silk, cotton and polyester cotton with disperse dyes in the same bath. The reduced olive R is mostly used for color matching, such as gray, brown, dark green, dark blue and other colors. 2, for the dyeing of cellulose fibers |
2379-81-9 - Upstream Downstream Industry
2379-81-9 - Nature
| acidity coefficient (pKa) | 11.19±0.20(Predicted) |
| EPA chemical information | Benzamide, N,N'-(10,15,16,17-tetrahydro-5,10,15,17-tetraoxo-5H-dinaphtho[2,3-a:2',3'-i]carbazole-6,9-diyl)bis- (2379-81-9) |
Last Update：2024-04-10 22:29:15
2379-81-9 - Production method
Using 1-aminoanthraquinone and 1-chloroanthraquinone as raw materials, the two are first condensed in the presence of copper powder, then nitrated and reduced, benzoyl chloride is benzoylated, and then closed-loop, Oxidation is the product. The finished product is filtered, dried and crushed..
1 part of 1-chloroanthraquinone, 1.047 part of 1-aminoanthraquinone, 36.65 part of nitrobenzene, 1.016 part of sodium carbonate and 2.5g of copper sulfate (industrial product) were condensed at 205-210 ℃ for 9h to obtain "imine" (I). After 3.99g of boric acid (100%), 149.6g of sulfuric acid (100%), 24.6g of industrial mixed acid and 18.79g of "imine" (I) (100%) were nitrified at 20-25 ℃, they were reduced to (II) with 15.38g of sodium sulfide (100%). 23.01 parts of o-dichlorobenzene, 2.75 parts of benzoyl chloride and 1 part (II) were closed at 150 ℃, oxidized with potassium chlorate (or sodium chlorate), filtered, washed with water until neutral to obtain 10g of dye.
This product can also be condensed with 1-benzoylamino-4-chloroanthraquinone and 1-amino-4-benzoylaminoanthraquinone in the presence of copper to obtain the product in a closed loop.
Last Update：2024-04-10 22:29:15
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Email: sales@medchemexpress.com
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Mobile: 609-228-6898
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View History
Raw Materials for 2379-81-9
Sulfuric acid
Copper(II) sulfate
Potassium chlorate
1-Amino anthraquinone
1,4-Diamino-2,3-dihydroanthraquinone
1-Chloro anthraquinone
Copper(II) sulfate
Potassium chlorate
1-Amino anthraquinone
1,4-Diamino-2,3-dihydroanthraquinone
1-Chloro anthraquinone
Downstream Products for 2379-81-9