5-Chloro-2-bromopyridine
2-Bromo-5-chloro-pyridine
CAS: 40473-01-6
Molecular Formula: C5H3BrClN
5-Chloro-2-bromopyridine - Names and Identifiers
| Name | 2-Bromo-5-chloro-pyridine |
| Synonyms | IFLAB-BB F2124-0201 2-Bromo-5-Chloropyridine 2-Brome-5-chloropyridine 5-Chloro-2-bromopyridine 2-BROMO-5-CHLOROPYRIDINE 2-Bromoo-5-chloropyridine 2-BroMoo-5-chloropyridine 2-Bromo-5-chloro-pyridine |
| CAS | 40473-01-6 |
| InChI | InChI=1/C5H3BrClN/c6-5-2-1-4(7)3-8-5/h1-3H |
5-Chloro-2-bromopyridine - Physico-chemical Properties
| Molecular Formula | C5H3BrClN |
| Molar Mass | 192.44 |
| Density | 1.736±0.06 g/cm3(Predicted) |
| Melting Point | 65-69 °C |
| Boling Point | 128 °C / 16mmHg |
| Flash Point | 82°C |
| Water Solubility | Slightly soluble in water. |
| Vapor Presure | 0.257mmHg at 25°C |
| Appearance | White powder |
| Color | Beige to yellow-brown |
| pKa | -1.49±0.10(Predicted) |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| Refractive Index | 1.581 |
| MDL | MFCD00234006 |
5-Chloro-2-bromopyridine - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R20/22 - Harmful by inhalation and if swallowed. R20/2236/37/38 - R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S22 - Do not breathe dust. S22 26 36/37/39 - S36 - Wear suitable protective clothing. |
| UN IDs | Cool, dry,tightly closed |
| HS Code | 29339900 |
| Hazard Class | IRRITANT |
5-Chloro-2-bromopyridine - Reference Information
| Application | 2-bromo-5-chloropyridine is an organic intermediate, a colorless solid, and can be made of 2-amino-5-chloropyridine It is prepared by diazotization reaction or 2, 5-dichloropyridine is substituted by hydrogen bromide. |
| preparation | bromine (18.0ml,353.7mmol) was slowly added to a solution of 2-amino -5-chloropyridine (15.0 g,116.7mmol) in 47% aq.HBr(75.0ml) at -10 ℃. Slowly add NaNO2(28.1g,407.3mmol) aqueous solution to it. Stir the mixture at -10 to -5°C for 1h, and then stir it at 5°C for 1h. The mixture was neutralized with an aqueous solution of 5M NaOH while the temperature was maintained below 25°C. The precipitate was filtered out and recrystallized with pentane to give 2-bromo-5-chloropyridine. |
Last Update：2024-04-10 22:29:15
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