2-Pentanone
Appearance
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Names | |
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Preferred IUPAC name
Pentan-2-one | |
Other names
methyl propyl ketone
2-pentanone MPK | |
Identifiers | |
3D model (JSmol)
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ChEBI | |
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.003.208 |
KEGG | |
PubChem CID
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RTECS number |
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
C5H10O | |
Molar mass | 86.13 g/mol |
Appearance | Colorless liquid |
Odor | resembling acetone |
Density | 0.8062 g/ml (20 °C) [1] |
Melting point | −78 °C (−108 °F; 195 K) |
Boiling point | 102[2][1] °C (216 °F; 375 K) |
6% (20°C)[3] | |
Vapor pressure | 3.6 kPa (20 °C) |
-57.41·10−6 cm3/mol | |
Refractive index (nD)
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1.3903 (20 °C) [1] |
Viscosity | 0.50 mPa·s (20 °C) |
Hazards | |
Flash point | 10 °C (50 °F; 283 K) |
Explosive limits | 1.5%-8.2%[3] |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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1600 mg/kg (rat, oral) 1600 mg/kg (mouse, oral)[4] |
LCLo (lowest published)
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50,000 ppm (guinea pig, 50 min) 13,000 ppm (guinea pig, 5 hr)[4] |
NIOSH (US health exposure limits): | |
PEL (Permissible)
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TWA 200 ppm (700 mg/m3)[3] |
REL (Recommended)
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TWA 150 ppm (530 mg/m3)[3] |
IDLH (Immediate danger)
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1500 ppm[3] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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2-Pentanone or methyl propyl ketone (MPK) is a ketone and solvent of minor importance. It is comparable to methyl ethyl ketone, but has a lower solvency and is more expensive.[5] It occurs naturally in Nicotiana tabacum (Tobacco)[6] and blue cheese as a metabolic product of Penicillium mold growth.[7]
References
- ^ a b c Baird, Zachariah Steven; Uusi-Kyyny, Petri; Pokki, Juha-Pekka; Pedegert, Emilie; Alopaeus, Ville (6 Nov 2019). "Vapor Pressures, Densities, and PC-SAFT Parameters for 11 Bio-compounds". International Journal of Thermophysics. 40 (11): 102. doi:10.1007/s10765-019-2570-9.
- ^ NIST Chemistry WebBook. http://webbook.nist.gov
- ^ a b c d e NIOSH Pocket Guide to Chemical Hazards. "#0488". National Institute for Occupational Safety and Health (NIOSH).
- ^ a b "2-Pentanone". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
- ^ Dieter Stoye (2007), "Solvents", Ullmann's Encyclopedia of Industrial Chemistry (7th ed.), Wiley, pp. 55–56
- ^ T. C. Tso (2007), "Tobacco", Ullmann's Encyclopedia of Industrial Chemistry (7th ed.), Wiley, p. 19
- ^ "WebExhibits: Methyl ketones".