Chembox new
Name = 2-Butanol
ImageFile = 2-butanol Line-Structure.svg
ImageName = 2-Butanol
ImageFile1 = Butan-2-ol-3D-vdW.png ImageName1 = 2-Butanol
IUPACName = 2-Butanol
OtherNames = Butan-2-ol
"sec"-Butyl alcohol
Section1 = Chembox Identifiers
CASNo = 78-92-2]
(+): [4221-99-2]
(-): [14898-79-4

Section2 = Chembox Properties
Formula = C4H10O
MolarMass = 74.12 g/mol
Density = 0.808 g/cm³ at 20 °C
MeltingPt = -114.7 °C
BoilingPt = 94 °C

Section7 = Chembox Hazards
NFPA-H = 1
NFPA-F = 3

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 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 1-butene or 2-butene::C4H8 + H2O → C4H10O



*"Merck Index", 11th Edition, 1541

External links

* [http://www.jtbaker.com/msds/englishhtml/b6302.htm MSDS for 2-butanol]
* [http://www.state.nj.us/health/eoh/rtkweb/1645.pdf Hazardous Substance Fact Sheet]

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