3,5-dibromo-1H-pyrazin-2-one
3,5-Dibromo-2-hydroxypyrazine
CAS: 21943-15-7
Molecular Formula: C4H2Br2N2O
3,5-dibromo-1H-pyrazin-2-one - Names and Identifiers
3,5-dibromo-1H-pyrazin-2-one - Physico-chemical Properties
| Molecular Formula | C4H2Br2N2O |
| Molar Mass | 253.88 |
| Density | 2.53±0.1 g/cm3(Predicted) |
| Melting Point | 174-178°C |
| Boling Point | 430.487℃ at 760 mmHg |
| Appearance | Light yellow-like solid |
| pKa | 8.35±0.60(Predicted) |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| MDL | MFCD07371406 |
3,5-dibromo-1H-pyrazin-2-one - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R41 - Risk of serious damage to eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S39 - Wear eye / face protection. |
| WGK Germany | 1 |
| HS Code | 29339900 |
3,5-dibromo-1H-pyrazin-2-one - Introduction
3, is an organic compound. The following is its nature, use, preparation and safety information:
Nature:
1. Appearance is white crystalline solid.
2. The molecular formula is C4H2Br2N2O, and the relative molecular mass is 237.88.
3. Has good solubility, soluble in organic solvents such as ethanol, ether and dichloromethane.
Use:
1. 3, often used as an intermediate in organic synthesis. It can be used to synthesize compounds such as drugs, pesticides and dyes.
2. It can also be used as a raw material for metal corrosion inhibitors and photosensitive chemicals.
Method:
3, the preparation of the pill usually has the following methods:
1. It can be prepared by reacting 2-hydroxypyrazine with bromine in a solvent. The reaction proceeds at ambient temperature and produces a white crystalline product.
2. The compound can also be obtained by reacting 2,5-dibromopyrazine with ammonia.
Safety Information:
3. The safety is high, but the following matters still need to be paid attention:
1. The compound is an irritant and may be irritating to the eyes and skin. Wear appropriate protective gloves and goggles during operation.
2. Avoid inhaling the dust or gas of the compound and use it in a well-ventilated place.
3. Be careful in handling and storage to avoid contact with combustibles.
4. If ingestion or contact, seek medical help immediately and bring the compound's label or safety data sheet.
Nature:
1. Appearance is white crystalline solid.
2. The molecular formula is C4H2Br2N2O, and the relative molecular mass is 237.88.
3. Has good solubility, soluble in organic solvents such as ethanol, ether and dichloromethane.
Use:
1. 3, often used as an intermediate in organic synthesis. It can be used to synthesize compounds such as drugs, pesticides and dyes.
2. It can also be used as a raw material for metal corrosion inhibitors and photosensitive chemicals.
Method:
3, the preparation of the pill usually has the following methods:
1. It can be prepared by reacting 2-hydroxypyrazine with bromine in a solvent. The reaction proceeds at ambient temperature and produces a white crystalline product.
2. The compound can also be obtained by reacting 2,5-dibromopyrazine with ammonia.
Safety Information:
3. The safety is high, but the following matters still need to be paid attention:
1. The compound is an irritant and may be irritating to the eyes and skin. Wear appropriate protective gloves and goggles during operation.
2. Avoid inhaling the dust or gas of the compound and use it in a well-ventilated place.
3. Be careful in handling and storage to avoid contact with combustibles.
4. If ingestion or contact, seek medical help immediately and bring the compound's label or safety data sheet.
Last Update：2024-04-09 15:17:55
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View History
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