Chloroacetone
| Chloroacetone | |
|---|---|
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| IUPAC name Chloropropanone | |
| Other names Acetonyl chloride, chloropropanone, 1-chloro-2-propanone, monochloroacetone, 1-chloro-2-ketopropane, 1-chloro-2-oxypropane | |
| Identifiers | |
| CAS number | 78-95-5  |
| PubChem | 6571 |
| ChemSpider | 6323 |
| UNII | 60ZTR74268 |
| EC number | 201-161-1 |
| ChEBI | CHEBI:47220 |
| RTECS number | UC0700000 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C3H5ClO |
| Molar mass | 92.52 g mol−1 |
| Appearance | Colorless liquid, oxidizes to amber |
| Density | 1.123 g/cm3 |
| Melting point | −44.5 °C; −48.1 °F; 228.7 K |
| Boiling point | 119 °C; 246 °F; 392 K |
| Solubility in water | 10 g/100 mL at 20 °C |
| Solubility | miscible in alcohol, ether, chloroform |
| Vapor pressure | 1.5 kPa |
| Dipole moment | 2.36 |
| Hazards | |
| Flash point | 35 °C; 95 °F; 308 K |
| Autoignition temperature | 610 °C; 1,130 °F; 883 K |
| Explosive limits | 3.4% - ?[1] |
| LD50 | 100 mg/kg (rats, oral)[2] |
(verify) (what is: / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | |
| Infobox references | |
Chloroacetone is a chemical compound with the formula CH3COCH2Cl. At STP it is a colourless liquid with a pungent odour.[3] On exposure to light, it turns to a dark yellow-amber colour.[4] It was used as a tear gas in World War I.[5]
Synthesis
Chloroacetone may be synthesized from the reaction between chlorine and diketene, or by the chlorination of acetone.
Applications
Chloroacetone is used to make dye couplers for colour photography, and is an intermediate in chemical manufacturing.[2] It is also used in the Feist-Benary synthesis of furans.[6]
Purification
Chloroacetone purchased from commercial suppliers contains 5% impurities including mesityl oxide, which is not removed by distillation. Mesityl oxide can be oxidized using acidified KMnO4 to form a diol (followed by separation with ether), which is removed on subsequent distillation.[7]
Transportation regulations
Transportation of unstabilized chloroacetone has been banned in the United States by the US Department of Transportation. Stabilized chloroacetone is in hazard class 6.1 (Poison Inhalation Hazard). Its UN number is 1695.
See also
- Use of poison gas in World War I
- Bromoacetone
References
- ↑ "ICSC:NENG0760 International Chemical Safety Cards (WHO/IPCS/ILO) CDC/NIOSH". Center for Disease Control. 2006-10-11. Retrieved 2009-04-17.
- ↑ 2.0 2.1 Hathaway, Gloria J.; Proctor, Nick H. (2004). Proctor and Hughes' Chemical Hazards of the Workplace (5 ed.). Wiley-Interscience. pp. 143–144. ISBN 978-0-471-26883-3. Retrieved 2009-04-16.
- ↑ "Occupational Safety and Health Guideline for Chloroacetone". U.S. Department of Labor - Occupational Safety & Health Administration. Retrieved 2008-06-06.
- ↑ "CHLOROACETONE". International Programme on Chemical Safety. Retrieved 2008-06-06.
- ↑ Haber, Ludwig Fritz (1986). The Poisonous Cloud: Chemical Warfare in the First World War. Oxford University press. ISBN 0-19-858142-4.
- ↑ Li, Jie-Jack; Corey, E. J. (2004). Name Reactions in Heterocyclic Chemistry. Wiley-Interscience. p. 160. ISBN 978-0-471-30215-5. Retrieved 2009-04-16.
- ↑ Phys. Chem. Chem. Phys., 2000,2, 237-245