Names | |
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Preferred IUPAC name
3-Hydroxybutan-2-one | |
Other names
3-Hydroxybutanone
Acetyl methyl carbinol | |
Identifiers | |
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3D model (JSmol)
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ChEBI |
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ChemSpider | |
ECHA InfoCard | 100.007.432 |
EC Number |
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KEGG | |
PubChem CID
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RTECS number |
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
C4H8O2 | |
Molar mass | 88.106 g·mol−1 |
Appearance | colorless liquid |
Odor | bland, yogurt-like |
Density | 1.012 g/cm3 |
Melting point | 15 °C (59 °F; 288 K) |
Boiling point | 148 °C (298 °F; 421 K) |
1000 g/L (20 °C) | |
Solubility in other solvents | Soluble in alcohol Slightly soluble in ether, petroleum ether Miscible in propylene glycol Insoluble in vegetable oil |
log P | -0.36 |
Acidity (pKa) | 13.72 |
Chiral rotation ([α]D)
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-39.4 |
Refractive index (nD)
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1.4171 |
Hazards | |
Flash point | 41 °C (106 °F; 314 K) |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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> 5000 mg/kg (rat, oral) |
Safety data sheet (SDS) | MSDS |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Acetoin, also known as 3-hydroxybutanone or acetyl methyl carbinol, is an organic compound with the formula CH3CH(OH)C(O)CH3. It is a colorless liquid with a pleasant, buttery odor. It is chiral. The form produced by bacteria is (R)-acetoin.[1]