2-Pyridinol
2-Hydroxypyridine
CAS: 142-08-5;72762-00-6
Molecular Formula: C5H5NO
2-Pyridinol - Names and Identifiers
| Name | 2-Hydroxypyridine |
| Synonyms | 2-pyridone A-PYRIDONE Pyridone-2 2-Pyridinol Pyridin-2-ol AURORA KA-3075 2(1H)-Pyridone alpha-Pyridone 2(1h)-pyridinone pyridin-2(1H)-one a-Hydroxypyridine 2-Hydroxypyridine 2-Hydroxy Pyridine TIMTEC-BB SBB004392 1-Hydroxy-2-pyridine |
| CAS | 142-08-5 72762-00-6 |
| EINECS | 205-520-3 |
| InChI | InChI=1/C5H5NO/c7-5-3-1-2-4-6-5/h1-4H,(H,6,7) |
2-Pyridinol - Physico-chemical Properties
| Molecular Formula | C5H5NO |
| Molar Mass | 95.1 |
| Density | 1.39 |
| Melting Point | 105-107 °C (lit.) |
| Boling Point | 280-281 °C (lit.) |
| Flash Point | 210 °C |
| Water Solubility | Soluble in water 450 g/L @ 20°C and ethanol, slightly soluble in benzene and ether. |
| Solubility | 450g/l |
| Vapor Presure | 0.000257mmHg at 25°C |
| Appearance | White to bright yellow crystals |
| Color | Colorless to yellow to brown, darken on storage with no loss of purity |
| BRN | 105786 |
| pKa | 0.75(at 20℃) |
| Storage Condition | Sealed in dry,Room Temperature |
| Sensitive | Sensitive to light |
| Refractive Index | 1.5939 (estimate) |
| MDL | MFCD00006268 |
| Physical and Chemical Properties | Density 1.39 melting point 102-109°C boiling point 280-281°C flash point 210°C |
2-Pyridinol - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R40 - Limited evidence of a carcinogenic effect R25 - Toxic if swallowed |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S37/39 - Wear suitable gloves and eye/face protection S22 - Do not breathe dust. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
| UN IDs | UN2811 |
| WGK Germany | 3 |
| RTECS | UV1144050 |
| FLUKA BRAND F CODES | 8 |
| TSCA | Yes |
| HS Code | 29333990 |
| Hazard Class | 6.1 |
| Packing Group | III |
| Toxicity | LD50 ipr-mus: 410 mg/kg TOXIA6 23,815,85 |
2-Pyridinol - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Biological activity | 2-Hydroxypyridine (2-Pyridino, 2-Pyridone) is used to synthesize peptides. |
| Use | Catalyst, used for the reaction of producing β-oxypropyl carbonate compounds from cyclic carbonate compounds and alcohol compounds and polyglutamic acid The ammonolysis reaction of esters. |
| production method | remove colored impurities by reflux at 181~185 o C/24 mmHg, and then recrystallization in EtOH, CHCl 3/ether, C 6 H 6, C 6 H 6/hexane or CCl 4; After continuous recrystallization or sublimation, or the combination of the two can obtain pure products. |
Last Update：2024-04-09 20:49:11
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