2-Butanol

2-Butanol
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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.

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.

• R-butan-2-ol-2D-skeletal.png

  (S)-(−)-2-butanol
• S-butan-2-ol-2D-skeletal.png

  (R)-(+)-2-butanol

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 2-butene:

C₄H₈ + H₂O → C₄H₁₀O

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References

• Merck Index, 11th Edition, 1541

External links

• MSDS for 2-butanol
• Hazardous Substance Fact Sheetde:2-Butanolnl:2-butanol