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2-Butanol



2-Butanol
IUPAC name 2-Butanol
Other names Butan-2-ol
sec-Butanol
sec-Butyl alcohol
Identifiers
CAS number [1]
(+): [4221-99-2]
(-): [14898-79-4&c=0&v= 78-92-2]
(+): [4221-99-2]
(-): [14898-79-4]
SMILES CC(O)CC
Properties
Molecular formula C4H10O
Molar mass 74.12 g/mol
Density 0.808 g/cm³ at 20 °C
Melting point

-114.7 °C

Boiling point

94 °C

Hazards
NFPA 704
3
1
0
 
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox 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.

Additional recommended knowledge

Contents

Stereoisomers

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 racemic mixture.

Applications

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.

Manufacture

2-Butanol is manufactured industrially by the hydration of 1-butene or 2-butene:

C4H8 + H2O → C4H10O

References

    • Merck Index, 11th Edition, 1541
     
    This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "2-Butanol". A list of authors is available in Wikipedia.
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