1735-84-8
3-Chloro-2,4,5,6-tetrafluoropyridine
CAS: 1735-84-8
Molecular Formula: C5ClF4N
1735-84-8 - Names and Identifiers
| Name | 3-Chloro-2,4,5,6-tetrafluoropyridine |
| Synonyms | 3-Chloroperfluoropyridine. 3-CHLORO-TETRAFLUOROPYRIDINE 2-CHLORO-2,4,5,6-TETRAFLUOROPYRIDINE 2,4,5,6-TETRAFLUORO-3-CHLOROPYRIDINE 3-Chloro-2,4,5,6-tetrafluoropyridine 3-CHLORO-2,4,5,6-TETRAFLUOROPYRIDINE 2,3,4,6-Tetrafluoro-5-chloropyridine Pyridine, 3-chloro-2,4,5,6-tetrafluoro- 3,3,3-trifluoro-2-methyl-2-(trifluoromethyl)propanoyl fluoride |
| CAS | 1735-84-8 |
| InChI | InChI=1/C5H3F7O/c1-3(2(6)13,4(7,8)9)5(10,11)12/h1H3 |
| InChIKey | UXUZMYHSICIOQT-UHFFFAOYSA-N |
1735-84-8 - Physico-chemical Properties
| Molecular Formula | C5ClF4N |
| Molar Mass | 185.51 |
| Density | 1.609 g/mL at 25 °C (lit.) |
| Boling Point | 118-121 °C (lit.) |
| Flash Point | >230°F |
| Vapor Presure | 217mmHg at 25°C |
| Appearance | Transparent colorless liquid |
| Specific Gravity | 1.641 |
| Color | Colorless to Almost colorless |
| BRN | 475873 |
| pKa | -11.94±0.28(Predicted) |
| Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
| Refractive Index | n20/D 1.436(lit.) |
| MDL | MFCD00010624 |
1735-84-8 - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R22 - Harmful 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 |
| WGK Germany | 3 |
| HS Code | 29333990 |
| Hazard Note | Irritant |
| Hazard Class | 8 |
1735-84-8 - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| Use | 3-chloro-2, 4,5, 6-tetrafluoropyridine is an organic intermediate. |
| Preparation | 3-chloro-2, 4,5, 6-tetrafluoropyridine can be prepared from 3, 5-dichloro-2, 4,6-trifluoropyridine as raw material. 70 g3,5-dichloro -2,4,6-trifluoropyridine, 22g of anhydrous potassium fluoride and 150mL sulfolane were mixed, stirred at 180 ℃ for 2.5h, reduced to room temperature, sampling and monitoring the complete conversion of raw materials, the reaction solution was poured into 1L ice water, and extracted with dichloromethane. The organic phase is washed with water and saturated sodium chloride solution, anhydrous sodium sulfate is dried, and concentrated under reduced pressure. The crude product obtained is rectified and purified to obtain 46.5g of colorless liquid, which is 3-chloro-2, 4,5, 6-tetrafluoropyridine, with 98.3% GC content and 72% yield. |
Last Update：2024-04-10 22:29:15
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View History
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