n-Butyl chloroformate
Butyl chloroformate
CAS: 592-34-7
Molecular Formula: C5H9ClO2
n-Butyl chloroformate - Names and Identifiers
| Name | Butyl chloroformate |
| Synonyms | Butyl chloroformate butyl chlrorformate Butyl chlorocarbonate N-BUTYL CHLOROFORMATE n-Butyl chloroformate BUTYL CHLOROCARBOXYLATE Butoxycarbonyl chloride Butyl chloridocarbonate butyl carbonochloridate carbonochloridicacidbutylester carbonochloridicacid,butylester Formic acid, chloro-, butyl ester |
| CAS | 592-34-7 |
| EINECS | 209-750-5 |
| InChI | InChI=1/C5H9ClO2/c1-2-3-4-8-5(6)7/h2-4H2,1H3 |
n-Butyl chloroformate - Physico-chemical Properties
| Molecular Formula | C5H9ClO2 |
| Molar Mass | 136.58 |
| Density | 1.074g/mLat 25°C(lit.) |
| Melting Point | -70 °C |
| Boling Point | 142°C(lit.) |
| Flash Point | 77°F |
| Water Solubility | DECOMPOSES |
| Vapor Presure | 2.42 psi ( 20 °C) |
| Appearance | Liquid |
| Color | Clear |
| BRN | 605635 |
| Storage Condition | 2-8°C |
| Sensitive | Moisture Sensitive |
| Refractive Index | n20/D 1.412(lit.) |
| Use | For Organic synthesis |
n-Butyl chloroformate - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R10 - Flammable R23 - Toxic by inhalation R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 2743 6.1/PG 2 |
| WGK Germany | 1 |
| FLUKA BRAND F CODES | 10-19 |
| TSCA | Yes |
| HS Code | 29159020 |
| Hazard Class | 6.1 |
| Packing Group | I |
n-Butyl chloroformate - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| application | n-butyl chloroformate is mainly used as an intermediate in pharmaceutical synthesis and an intermediate in organic synthesis, and is mainly used in laboratory research and development and chemical pharmaceutical synthesis. |
| preparation | n-butyl chloroformate preparation is as follows: 1580g of n-butanol (M = 74) is preheated to 100 ℃, added from the feed port on the reaction rectification tower by advection pump, and fully contacted with phosgene (0.5MPa,M = 98.9) entering the feed port at the reaction stage at 100 ℃. The generated hydrogen chloride and excess phosgene enter the subsequent recovery device through the top of the tower, and are separated by deep condensation at -40 ℃. The liquid phosgene enters the reaction rectification tower through the heat exchanger for reuse, and the hydrogen chloride gas is introduced into the 1.0wt%NaOH aqueous solution for absorption. Butyl chloroformate as a single product stream through the tower kettle into the storage tank for subsequent use. The composition of the reaction solution was analyzed by gas chromatography. The results showed that the conversion rate of butanol was> 99.9%, and the selectivity of chloroformate was> 99.9%. |
| use | for organic synthesis |
Last Update：2024-04-09 15:16:46
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