5203-77-0
5-Hydroxy-1,3-dimethylpyrazole
CAS: 5203-77-0
Molecular Formula: C5H8N2O
5203-77-0 - Names and Identifiers
5203-77-0 - Physico-chemical Properties
| Molecular Formula | C5H8N2O |
| Molar Mass | 112.13 |
| Density | 1.17 |
| Melting Point | 113-117°C |
| Boling Point | 226°C |
| Flash Point | 90°C |
| Vapor Presure | 0.056mmHg at 25°C |
| pKa | 9.19±0.28(Predicted) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.554 |
| Physical and Chemical Properties | This product is a solid material, m.p.116 ~ 117 ℃, insoluble in water, soluble in ethanol, methanol and other solvents. |
5203-77-0 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | 22 - Harmful if swallowed |
5203-77-0 - Reference Information
| Use | 1, 3-Dimethyl-2-pyrazolin-5-one is an intermediate for the synthesis of acaricide acaricide acarate. |
| production method | the preparation method is to drop 198.0g(4.0mol) of methylhydrazine with a content of 93% into a mixed solution containing 100mL of ethanol and 530.0g(4.0mol) of ethyl acetoacetate with a content of 98%, refluxing for 1h, deethanol and drying to obtain 440.0g of the product with a crude yield of 98.2%. |
Last Update：2024-04-10 22:29:15
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CAS: 5203-77-0
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