3-Methyl-4-nitro-1-p-nitrophenyl-5-pyrazolone
Picrolonic Acid
CAS: 550-74-3
Molecular Formula: C10H8N4O5
3-Methyl-4-nitro-1-p-nitrophenyl-5-pyrazolone - Names and Identifiers
3-Methyl-4-nitro-1-p-nitrophenyl-5-pyrazolone - Physico-chemical Properties
| Molecular Formula | C10H8N4O5 |
| Molar Mass | 264.19 |
| Density | 1.65±0.1 g/cm3(Predicted) |
| Melting Point | 119 °C |
| Boling Point | 548.8±50.0 °C(Predicted) |
| Flash Point | 285.7°C |
| Water Solubility | Slightly soluble in water. Soluble in alcohol. |
| Solubility | 0.27 % in water at room temperature, readily soluble in alcohol. |
| Vapor Presure | 4.26E-12mmHg at 25°C |
| Appearance | Yellow crystalline material. Melting point 116-120°C (with decomposition). |
| Merck | 14,7412 |
| BRN | 623723 |
| pKa | 2.44±0.40(Predicted) |
| Storage Condition | Sealed in dry,2-8°C |
| Refractive Index | 1.714 |
| Physical and Chemical Properties | Melting Point: 119 |
3-Methyl-4-nitro-1-p-nitrophenyl-5-pyrazolone - Risk and Safety
| Risk Codes | R68 - Possible risk of irreversible effects R36/37/38 - Irritating to eyes, respiratory system and skin. R22 - Harmful if swallowed R36/38 - Irritating to eyes and skin. R7 - May cause fire |
| Safety Description | S37/39 - Wear suitable gloves and eye/face protection S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | 3224 |
| RTECS | UQ9510000 |
| TSCA | Yes |
| HS Code | 29339900 |
3-Methyl-4-nitro-1-p-nitrophenyl-5-pyrazolone - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | detect ammonium, calcium, copper, mercury, potassium, sodium and strontium, and determine barium, lead, magnesium and thorium. Reagents such as alkaloids, tryptophan, phenylalanine, etc. |
| Production method | (I) first nitrification 1-phenyl-3-methyl-2-pyrazol-5-one at no more than 15°C, and then refining. The process is as follows: 1. Filter after nitrification, dilute pickling, and proceed to the next step immediately after washing with water; 2. Hydrolyze in 33% acetic acid at 50 ~%℃, and filter and wash with water after hydrolysis; 3. Change sodium salt, add sodium carbonate in ethanol and neutralize until litmus is alkaline, then refine with water, and acidify with hydrochloric acid to obtain crude product; 4. Crystallize with ethanol to obtain finished product. Process reaction formula: |
Last Update：2024-04-09 21:11:58
