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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: | DIBENZANTHRONE |
| Synonyms: | sandothrenedarkbluenbo;sandothrenedarkbluenboa;sandothrenedarkbluenmba;Solanthrene Dark Blue B;Solanthrene Dark Blue BA;Solanthrene Dark Blue F-BA;Vat Dark Blue BO UL Conc;VAT BLUE 20 |
| CAS: | 116-71-2 |
| MF: | C34H16O2 |
| MW: | 456.49 |
| EINECS: | 204-152-0 |
| Product Categories: | Organics |
| Mol File: | 116-71-2.mol |
| Melting point | 338-339 °C |
| Boiling point | 522.64°C (rough estimate) |
| density | 1.1055 (rough estimate) |
| refractive index | 1.4875 (estimate) |
| storage temp. | Sealed in dry,Room Temperature |
| Appearance | Brown to black Solid |
| CAS DataBase Reference | 116-71-2(CAS DataBase Reference) |
| NIST Chemistry Reference | Dibenzanthrone(116-71-2) |
| EPA Substance Registry System | Violanthrone (116-71-2) |
| Description | Violanthrone, Indanthren DarkBlue BOA,is generated bypotash fusion of benzanthrone , .Direct potash fusion leads to side products, suchas isoviolanthrone and 4-hydroxybenzanthrone.The crude product may be used directly or inmixtures with other dyes in vat dyeing. It is alsoused to generate violanthrone derivatives. Severalprocesses have been developed to decreasethe amounts of undesirable side products of thedirect potash fusion of benzanthrone or to purifythe bibenzanthronyl or the crude violanthrone. Especially effective is the additionof high-boiling solvents such as naphthalene, theso-called low carbazole anthracene residues, orsodium acetate to the melt. The quality of theproducts prepared by these methods is satisfactoryfor the production of almost all violanthronedyes. | ||||||||||||||||||||||||||||||
| Bluish-black to black powder. | |||||||||||||||||||||||||||||||
| Air & Water Reactions | Insoluble in water. | ||||||||||||||||||||||||||||||
| Flash point data for DIBENZANTHRONE are not available. DIBENZANTHRONE is probably combustible. | |||||||||||||||||||||||||||||||
| Flammability and Explosibility | Not classified | ||||||||||||||||||||||||||||||
| Violanthrone of high purity is obtainedfrom 4,4'-bibenzanthronyl (153) by alkaline oracid ring closure, preferably in the presenceof oxidizing agents , . If this ringclosure is carried out in sulfuric acid withan excess of manganese dioxide, the 16,17-violanthronequinone (155) is obtained. This canbe reduced readily with sodium hydrogen sulfiteto 16,17-dihydroxyviolanthrone (156). Subsequentalkylation of the hydroxy groups yieldsvery fast navy-blue to brilliant-green vat dyes.The dimethyl ether (157) is the well-knowndye Caledon Jade Green or Indanthren BrilliantGreen B and FFB (extremely pure form). | |||||||||||||||||||||||||||||||
| Properties and Applications |
|
| Raw materials | Potassium hydroxide-->Nitrogen-->Sodium acetate-->Sodium acetate trihydrate-->Sodium chlorate-->Naphthalene-->Benzanthrone-->Diffusing agent-->Triethylene glycol-->[4,4'-bi-7H-benz[de]anthracene]-7,7'-dione-->7H-Benz[de]anthracen-7-one, 2-chloro--->[3,3'-bi-7H-benz[de]anthracene]-7,7'-dione-->Anthra[9,1,2-cde]benzo[rst]pentaphene-->4,4'-dibenzoyl-1,1'-binaphtyl-->Vat Violet 10-->3-Bromobenzanthrone-->Anthracen-9-ol-->4,4'-dibenzoyl-1,1'-binaphtyl |
| Preparation Products | Vat Black 9-->INDANTHRENE BLACK BBN-->Vat Dark Blue VB-->vat black 16-->Anthra[9,1,2-cde]benzo[rst]pentaphene-5,10-dione, chloro derivs.-->INDANTHRENE BLACK BBN-->vat black 16 |
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