di-p-tolylethanedione
4,4'-Dimethylbenzil
CAS: 3457-48-5
Molecular Formula: C16H14O2
di-p-tolylethanedione - Names and Identifiers
| Name | 4,4'-Dimethylbenzil |
| Synonyms | 4,4'-DIMETHYLBENZIL 4,4'-Dimethylbenzil di-p-tolylethanedione LABOTEST-BB LT00159323 4,4'-DIMETHYLDIBENZOYL 1,2-Di-p-tolyl-ethane-1,2-dione Ethanedione,bis(4-methylphenyl)- Ethanedione, bis(4-methylphenyl)- 1,2-Bis(4-methylphenyl)-1,2-ethanedione 1,2-bis(4-methylphenyl)ethane-1,2-dione |
| CAS | 3457-48-5 |
| EINECS | 222-388-2 |
| InChI | InChI=1/C16H14O2/c1-11-3-7-13(8-4-11)15(17)16(18)14-9-5-12(2)6-10-14/h3-10H,1-2H3 |
di-p-tolylethanedione - Physico-chemical Properties
| Molecular Formula | C16H14O2 |
| Molar Mass | 238.28 |
| Density | 1.119±0.06 g/cm3 (20 ºC 760 Torr) |
| Melting Point | 102-104°C(lit.) |
| Boling Point | 211 °C (7 mmHg) |
| Flash Point | 168.6°C |
| Vapor Presure | 1.34E-06mmHg at 25°C |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.6290 (estimate) |
| MDL | MFCD00008554 |
di-p-tolylethanedione - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S24/25 - Avoid contact with skin and eyes. S36/37 - Wear suitable protective clothing and gloves. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| HS Code | 29143990 |
di-p-tolylethanedione - Introduction
4,4 '-Dimethylbenzil is an organic compound with the chemical formula C16H16O. Its nature is as follows:
1. Appearance: colorless crystal or white solid
2. solubility: soluble in ethanol, ether and benzene and other organic solvents, insoluble in water.
3. melting point: about 136-138 degrees Celsius.
4,4 '-Dimethylbenzil is mainly used as an intermediate in organic synthesis. It can be used in the synthesis of biologically active compounds, for example, as pharmaceutical intermediates in the pharmaceutical field and as raw materials for the synthesis of pesticides. In addition, it can also be used for synthetic dyes, fragrances and polymer materials.
In the preparation method, 4,4 '-Dimethylbenzil can be prepared by reacting p-dimethylaniline with benzoic acid. The specific process is that p-dimethylaniline and benzoic acid are heated to react in the presence of a suitable catalyst and solvent to form 4,4 ′-Dimethylbenzil.
Regarding safety information, 4,4 '-Dimethylbenzil is a chemical that requires safe operation when used. It may be irritating to the eyes, skin and respiratory system, so direct contact with the skin should be avoided and ventilation measures should be taken. If inhaled or ingested, seek medical attention immediately. During use or storage, avoid contact with flammable materials such as heat sources and open flames, and keep away from chemicals such as acids and alkalis.
1. Appearance: colorless crystal or white solid
2. solubility: soluble in ethanol, ether and benzene and other organic solvents, insoluble in water.
3. melting point: about 136-138 degrees Celsius.
4,4 '-Dimethylbenzil is mainly used as an intermediate in organic synthesis. It can be used in the synthesis of biologically active compounds, for example, as pharmaceutical intermediates in the pharmaceutical field and as raw materials for the synthesis of pesticides. In addition, it can also be used for synthetic dyes, fragrances and polymer materials.
In the preparation method, 4,4 '-Dimethylbenzil can be prepared by reacting p-dimethylaniline with benzoic acid. The specific process is that p-dimethylaniline and benzoic acid are heated to react in the presence of a suitable catalyst and solvent to form 4,4 ′-Dimethylbenzil.
Regarding safety information, 4,4 '-Dimethylbenzil is a chemical that requires safe operation when used. It may be irritating to the eyes, skin and respiratory system, so direct contact with the skin should be avoided and ventilation measures should be taken. If inhaled or ingested, seek medical attention immediately. During use or storage, avoid contact with flammable materials such as heat sources and open flames, and keep away from chemicals such as acids and alkalis.
Last Update：2024-04-09 21:48:26
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View History
di-p-tolylethanedione
N-METHYL-3-PHENYL-3-HYDROXYPROPYLAMINE
Pyrogallolsulfonephthaleine
(4-(2-BROMOETHYL)PHENOXY)-(1,1-DIMETHYLETHYL)DIMETHYLSILANE
5-Chloropyrazolo[1,5-a]pyriMidine-3-carbonitrile
4-AMINOBENZOIC ACID SODIUM SALT
N-METHYL-3-PHENYL-3-HYDROXYPROPYLAMINE
Pyrogallolsulfonephthaleine
(4-(2-BROMOETHYL)PHENOXY)-(1,1-DIMETHYLETHYL)DIMETHYLSILANE
5-Chloropyrazolo[1,5-a]pyriMidine-3-carbonitrile
4-AMINOBENZOIC ACID SODIUM SALT