CHROMONE
chromone
CAS: 491-38-3
Molecular Formula: C9H6O2
CHROMONE - Names and Identifiers
| Name | chromone |
| Synonyms | chromone 4-Chromenone Benz-γ-pyrone 4H-chromen-4-one Benzo-gama-pyrone 4H-benzo(b)pyran-4-one Chromone,1-Benzopyran-4-one Chromone1-Benzopyran-4(4H)-one |
| CAS | 491-38-3 |
| EINECS | 207-737-9 |
| InChI | InChI=1/C9H6O2/c10-8-5-6-11-9-4-2-1-3-7(8)9/h1-6H |
| InChIKey | OTAFHZMPRISVEM-UHFFFAOYSA-N |
CHROMONE - Physico-chemical Properties
| Molecular Formula | C9H6O2 |
| Molar Mass | 146.14 |
| Density | 1.248 |
| Melting Point | 55-60°C(lit.) |
| Boling Point | 239℃ |
| Flash Point | 107℃ |
| Vapor Presure | 0.0422mmHg at 25°C |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| Refractive Index | 1.5100 (estimate) |
| Physical and Chemical Properties | Ethazol, also known as chromone, is also called "4-chroenone" and "2, 3-benzo-4-pyrone". Soluble in alcohol, ether, benzene and chloroform, soluble in concentrated sulfuric acid blue purple fluorescence, the alcohol solution and iodine red. Boiling sublimation, distillation does not decompose, volatile in the vapor. Can be fuming sulfuric acid (containing 50% sulfur trioxide) decomposition. Azeotrope with sodium methoxide to give 2-hydroxyacetophenone and formic acid, in a small amount of carbon disulfide with 1mol of bromine, mainly to 2,3-Dibromo benzo dihydropyran-4-one. |
CHROMONE - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | 22 - Harmful if swallowed |
| Safety Description | S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| RTECS | GB7887000 |
CHROMONE - Reference Information
| Preparation method | In benzene, benzodihydropyran-4-one and phosphorus pentachloride are azeotropic and water treated, or cis-3-phenoxy acrylic acid reacts with acetyl chloride and a small amount of sulfuric acid. |
Last Update：2024-04-09 19:05:12
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