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2-Butanol
From Wikipedia, the free encyclopedia
| 2-Butanol | |
|---|---|
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| Chemical name | 2-Butanol |
| Other names | Butan-2-ol sec-Butanol sec-Butyl alcohol |
| Chemical formula | C4H10O |
| Molecular mass | 74.12 g/mol |
| CAS number | [78-92-2] (+): [4221-99-2] (-): [14898-79-4] |
| Density | 0.808 g/cm³ at 20 °C |
| Melting point | -114.7 °C |
| Boiling point | 99.5 °C |
| SMILES | CC(O)CC |
| NFPA 704 |
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| Disclaimer and references | |
2-Butanol, or sec-butanol, is a chemical compound with formula C4H10O. This secondary alcohol is a flammable, colorless liquid that is soluble in 12 parts water and completely miscible with polar organic solvent such as ethers and other alcohols. 2-Butanol is chiral and thus can be obtained as either of two stereoisomers designated as (R)-(−)-2-butanol and (S)-(+)-2-butanol. It is normally found as an equal mixture of the two stereoisomers, a so-called racemic mixture.
2-Butanol is used as a solvent, as an intermediate in the manufacture of other chemicals (such as butanone), in industrial cleaners, and in paint removers. Many of the volatile esters of 2-butanol have pleasant aromas and are used as perfumes or in artificial flavors.
2-Butanol is manufactured industrially by the hydration of 2-butene:
- C4H8 + H2O → C4H10O
- Merck Index, 11th Edition, 1541