Chemistry:Methyl propionate
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| Names | |
|---|---|
| Preferred IUPAC name
Methyl propanoate | |
| Other names
Methyl propionate
Propanoic acid, methyl ester Propionic acid, methyl ester | |
| Identifiers | |
3D model (JSmol)
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PubChem CID
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| UNII | |
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| Properties | |
| C4H8O2 | |
| Molar mass | 88.106 g·mol−1 |
| Appearance | Colorless liquid[1] |
| Density | 0.915 g/L[1] |
| Melting point | −88 °C (−126 °F; 185 K)[1] |
| Boiling point | 80 °C (176 °F; 353 K)[1] |
| 72 g/L (20 °C)[1] | |
| -55.0·10−6 cm3/mol | |
| Hazards | |
| Flash point | −2 °C (28 °F; 271 K)[1] |
| 465 °C (869 °F; 738 K)[1] | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Methyl propionate, also known as methyl propanoate, is an organic compound with the molecular formula CH
3CH
2CO
2CH
3. It is a colorless liquid with a fruity, rum-like odor.[2]
Preparation
Methyl propionate can be prepared by esterification of propionic acid with methanol. Industrially, it is prepared by carboalkoxylation, i.e., the reaction of ethylene with carbon monoxide and methanol in the presence of a catalyst:
- C
2H
4 + CO + MeOH → MeO
2CCH
2CH
3
The reaction is catalyzed by nickel carbonyl and palladium(0) complexes.[3][4]
Uses
Condensation of Methyl propionate with formaldehyde followed by dehydration yields methyl methacrylate:[4]
- MeO
2CCH
2CH
3 + CH
2O → MeO
2CCH(CH
2OH)CH
3 - MeO
2CCH(CH
2OH)CH
3 → MeO
2CC(=CH
2)CH
3
Methyl propionate is used as a solvent for cellulose nitrate and lacquers, and as a raw material for the production of paints, varnishes and other chemicals such as methyl methacrylate.[2][3]
Due to its fruity smell and taste, it is also used in fragrances and flavoring.[2][5]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Record in the GESTIS Substance Database of the Institute for Occupational Safety and Health
- ↑ 2.0 2.1 2.2 "Methyl Propionate Hazardous Substance Fact Sheet". New Jersey Department of Health and Senior Services. http://nj.gov/health/eoh/rtkweb/documents/fs/1290.pdf.
- ↑ 3.0 3.1 Ulf-Rainer Samel; Walter Kohler; Armin Otto Gamer; Ullrich Keuser (2000). "Propionic Acid and Derivatives". Ullmann's Encyclopedia of Industrial Chemistry. doi:10.1002/14356007.a22_223.pub2. ISBN 9783527306732.(mayth and yafs)
- ↑ 4.0 4.1 Scott D. Barnicki "Synthetic Organic Chemicals" in Handbook of Industrial Chemistry and Biotechnology edited by James A. Kent, New York : Springer, 2012. 12th ed. ISBN:978-1-4614-4259-2.
- ↑ "Methyl propionate". thegoodscentscompany.com. http://www.thegoodscentscompany.com/data/rw1003661.html.
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