vulcanizing agent DGM
4,4'-Dibenzoylquinone Dioxime
CAS: 120-52-5
Molecular Formula: C20H14N2O4
vulcanizing agent DGM - Names and Identifiers
| Name | 4,4'-Dibenzoylquinone Dioxime |
| Synonyms | vulcanizing agent DGM QUINONE DIOXIME DIBENZOATE Dibenzoyl-p-quinone dioxime 4,4'-DIBENZOYLQUINONE DIOXIME P P'-DIBENZOYLQUINONE DIOXIME 4,4'-Dibenzoylquinone Dioxime p,p'-dibenzoylquinone dioxime DIBENZOYL-P-BENZOQUINONE DIOXIME p-Benzoquinone dioxime dibenzoate P-BENZOQUINONE BIS(O-BENZOYLOXIME) 1,4-Bis(benzoyloxyimino)cyclohexa-2,5-diene 2,5-cyclohexadiene-1,4-dione,bis(o-benzoyloxime) 2,5-cyclohexadiene-1,4-dione, bis(O-benzoyloxime) [cyclohexa-2,5-diene-1,4-diylidenebis(nitrilooxy)]bis(phenylmethanone) |
| CAS | 120-52-5 |
| EINECS | 204-403-4 |
| InChI | InChI=1/C20H14N2O4/c23-19(15-7-3-1-4-8-15)25-21-17-11-13-18(14-12-17)22-26-20(24)16-9-5-2-6-10-16/h1-14H/b21-17-,22-18+ |
vulcanizing agent DGM - Physico-chemical Properties
| Molecular Formula | C20H14N2O4 |
| Molar Mass | 346.34 |
| Density | 1.21±0.1 g/cm3(Predicted) |
| Melting Point | -47 ℃ |
| Boling Point | 467.3±55.0 °C(Predicted) |
| Flash Point | 190°C |
| Water Solubility | Practically insoluble in water |
| Vapor Presure | 6.57E-09mmHg at 25°C |
| Appearance | Solid |
| Color | Light gray to Brown to Black |
| Storage Condition | Room Temprature |
| Refractive Index | 1.598 |
| MDL | MFCD00045557 |
| Physical and Chemical Properties | Density: 1.21g/cm3 Boiling Point: 467.3°C at 760 mmHg flash point: 190°C vapor pressure: 6.57 E-09mmHg at 25°C |
vulcanizing agent DGM - Risk and Safety
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
vulcanizing agent DGM - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| production method | (1) synthesis of quinone dioxime??? First, add 30% sodium hydroxide solution into the reaction kettle, and slowly add phenol under stirring to dissolve it in sodium hydroxide solution. After cooling to 0 ℃, sodium nitrite and 30% sulfuric acid are added to keep the temperature at 7~8 ℃ for reaction, and nitroso phenol crystals are gradually precipitated. After stirring for 1h, stand for filtration, crystallization is washed with water to obtain nitrophenol. After transposition, it is mixed with hydroxylamine hydrochloride aqueous solution, and heated to 70°C for oxime reaction. After the reaction is completed, the p-phenylquinone dioxime is filtered. (2) Synthesis of benzoyl chloride ① Benzoic acid is prepared by reacting with phosgene. Benzoic acid is put into an actinic kettle, heated and melted, and phosgene is introduced at 140~150 ℃. The reaction tail gas contains hydrogen chloride and unreacted phosgene. After treatment with alkali, it is emptied. At the end of the reaction, the temperature is reduced to -2~-3 ℃, and the degassing operation is subjected to reduced pressure distillation to obtain benzoyl chloride. Purity ≥ 98%. (2) add toluene to the chlorination kettle, pass chlorine under light to react to prepare trichlorotoluene, and then hydrolyze in acidic medium to prepare benzoyl chloride. ③The synthesis of dibenzoyl p-quinone dioxime is prepared by the reaction of benzoyl chloride and p-quinone dioxime. |
Last Update：2024-04-10 22:29:15
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View History
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4-三氟甲基苯甲酰胺
3-甲基-2-[2'-(甲基磺酰基)联苯-4-基]-5-(三氟甲基)喹喔啉
3-(Benzothiazol-2-ylthio)propionic acid sodium salt
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2-氯-6-((4,6-二甲氧基嘧啶-2-基)硫基)苯甲酸钠
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