4424-06-0
Vat Orange 7
CAS: 4424-06-0;104432-60-2;126602-78-6;136298-09-4;156841-34-8;42612-21-5;67053-85-4;75662-41-8;79586-96-
Molecular Formula: C26H12N4O2
4424-06-0 - Names and Identifiers
4424-06-0 - Physico-chemical Properties
| Molecular Formula | C26H12N4O2 |
| Molar Mass | 412.4 |
| Density | 1.66 |
| Boling Point | 531.86°C (rough estimate) |
| Flash Point | 514.4°C |
| Vapor Presure | 1.87E-35mmHg at 25°C |
| Appearance | Solid:nanomaterial |
| Color | Orange to Brown |
| Maximum wavelength(λmax) | ['480nm(DMSO)(lit.)'] |
| pKa | 1.34±0.20(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.6000 (estimate) |
| Physical and Chemical Properties | Orange-red powder. Insoluble in acetone, ethanol, chloroform, toluene, pyridine-soluble, O-chlorophenol. Dark red yellow in concentrated sulfuric acid, Olive (red fluorescent) in alkaline sodium hydrosulfite, red brown in acidic solution. |
4424-06-0 - Risk and Safety
| RTECS | DX1000000 |
| Toxicity | LD50 intraperitoneal in rat: 520mg/kg |
4424-06-0 - Reference Information
| LogP | 0.26 at 24℃ and pH7 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | reduced orange GR is used for cotton dyeing and cotton printing, and is also suitable for dyeing vinylon, nylon, polyester cotton and cotton fabrics. It is also used to make organic pigments. Dark printing for cotton fabrics |
| production method | using 1,4,5,8-naphthalenetetracaric acid and o-phenylenediamine as raw materials, condensation in acetic acid medium, After separation and purification, the product is obtained.. The mixture of cis isomer and trans isomer is reduced red GG (C.I.Vat Red 14). After separation, the cis isomer is reduced bordeaux 2R (C.I.Vat Red 15); The trans isomer is reduced orange GR (C.I.Vat Orange 7). 1 part of naphthalenedic acid, 0.9 part of o-phenylenediamine and 7.5 part of glacial acetic acid were added into the reaction kettle, heated to 115 ℃, refluxed for 5 hours, and then acetic acid was evaporated. Then add hot water, boil at 90 ℃ for 30min, filter, and wash the filter cake with hot water until neutral. Dry below 100 ℃ to obtain reduced Dahong GG. The prepared reduced Dahong GG is heated in an ethanol solution of sodium hydroxide for two separation, and reduced orange GR and reduced bordeaux 2R are obtained respectively. |
Last Update：2024-04-10 22:29:15
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