3-Ethynylpyridine
3-Ethynylpyridine
CAS: 2510-23-8
Molecular Formula: C7H5N
3-Ethynylpyridine - Names and Identifiers
| Name | 3-Ethynylpyridine |
| Synonyms | 3-Ethynylpyridine 3-ETHYNYLPYRIDINE 3-Ethylnyl Pyridine Pyridine, 3-ethynyl- Pyridine, 3-ethynyl- (6CI, 7CI, 8CI, 9CI) |
| CAS | 2510-23-8 |
| InChI | InChI=1/C6H4N2/c1-2-6-4-3-5-7-8-6/h1,3-5H |
3-Ethynylpyridine - Physico-chemical Properties
| Molecular Formula | C7H5N |
| Molar Mass | 103.12 |
| Density | 1.02±0.1 g/cm3(Predicted) |
| Melting Point | 39-40 °C (lit.) |
| Boling Point | 83-84 °C/30 mmHg (lit.) |
| Flash Point | 134°F |
| Appearance | Low Melting Solid |
| Color | Colorless to brownish |
| pKa | 3.71±0.10(Predicted) |
| Storage Condition | Inert atmosphere,Store in freezer, under -20°C |
| Refractive Index | 1.543 |
3-Ethynylpyridine - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R11 - Highly Flammable |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | UN 1325 4.1/PG 2 |
| WGK Germany | 3 |
| HS Code | 29333990 |
| Hazard Class | 4.1 |
| Packing Group | Ⅱ |
3-Ethynylpyridine - Introduction
3-ethynylpyriridine is an organic compound with a chemical formula of C7H5N and a molecular weight of 103.12. It is a colorless liquid with an odor similar to pyridine.
3-Ethynylpyridine has a wide range of applications in drug synthesis and organic synthesis reactions. It can be used as a variety of photosensitizers, pharmaceutical raw materials and intermediates of nonlinear optical materials. In addition, it is used as a building block for organic electroluminescent materials and Sol-gel materials.
There are two main methods for preparing 3-Ethynylpyridine: one is generated by the reaction of pyridine and bromoacetylene, and then the product is obtained by alkaline hydrolysis; the other is the direct reaction of pyridine with bromoacetylene, and the product is obtained by acid hydrolysis.
Regarding safety information, 3-Ethynylpyridine is a flammable liquid. Exposure to high temperatures, flames or sparks may cause an explosion. When handling this compound, care should be taken to avoid contact with skin and eyes, and to ensure that it is operated in a well-ventilated environment. Be careful during storage and use to avoid contact with oxidants, strong acids and strong bases. It is best to understand and follow local safety procedures before use.
3-Ethynylpyridine has a wide range of applications in drug synthesis and organic synthesis reactions. It can be used as a variety of photosensitizers, pharmaceutical raw materials and intermediates of nonlinear optical materials. In addition, it is used as a building block for organic electroluminescent materials and Sol-gel materials.
There are two main methods for preparing 3-Ethynylpyridine: one is generated by the reaction of pyridine and bromoacetylene, and then the product is obtained by alkaline hydrolysis; the other is the direct reaction of pyridine with bromoacetylene, and the product is obtained by acid hydrolysis.
Regarding safety information, 3-Ethynylpyridine is a flammable liquid. Exposure to high temperatures, flames or sparks may cause an explosion. When handling this compound, care should be taken to avoid contact with skin and eyes, and to ensure that it is operated in a well-ventilated environment. Be careful during storage and use to avoid contact with oxidants, strong acids and strong bases. It is best to understand and follow local safety procedures before use.
Last Update：2024-04-09 21:32:39
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