2-butanol

Also known as sec-butanol, butan-2-ol, 1-methylpropyl alcohol, butanol-2, methylethylcarbinol, 2-butyl alcohol, 1-methyl-1-propanol, s-butyl alcohol

Butan-2-ol, or '''sec-butanol', is an organic compound with formula CH3CH(OH)CH2CH3. Its structural isomers are 1-butanol, isobutanol, and tert-butanol. 2-Butanol is chiral and thus can be obtained as either of two stereoisomers designated as (R)-(−)-butan-2-ol and (S'')-(+)-butan-2-ol. It is normally encountered as a 1:1 mixture of the two stereoisomers — a racemic mixture.

Chemical data

Formula: C4H10O
Molecular weight: 74.12 g/mol
IUPAC name: butan-2-ol
SMILES: CCC(C)O
InChIKey: BTANRVKWQNVYAZ-UHFFFAOYSA-N
XLogP: 0.6
Polar surface area: 20.2 Å²
H-bond donors: 1
H-bond acceptors: 1
Formal charge: 0

via PubChem

Wikidata facts

Mass: 74.073

Show 16 more facts

Commons category: Butan-2-ol
flash point: 75
NIOSH Pocket Guide ID: 0077
density: 0.81
immediately dangerous to life or health: 6060
melting point: -114.7
boiling point: 99.51
vapor pressure: 12
solubility: 16
lower flammable limit: 1.7
upper flammable limit: 9.8
ionization energy: 9.88
time-weighted average exposure limit: 450
short-term exposure limit: 455
canonical SMILES: CCC(C)O
chemical formula: C₄H₁₀O

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Butan-2-ol, or '''sec-butanol', is an organic compound with formula CH3CH(OH)CH2CH3. Its structural isomers are 1-butanol, isobutanol, and tert-butanol. 2-Butanol is chiral and thus can be obtained as either of two stereoisomers designated as (R)-(−)-butan-2-ol and (S)-(+)-butan-2-ol. It is normally encountered as a 1:1 mixture of the two stereoisomers — a racemic mixture.

This secondary alcohol is a flammable, colorless liquid that is soluble in three parts water and completely miscible with organic solvents. It is produced on a large scale, primarily as a precursor to the industrial solvent methyl ethyl ketone.