Sec-Butanol

sec-Butanol

Names
IUPAC name Butan-2-ol
Other names 2-Butanol 2-Butyl alcohol sec-Butyl alcohol
Identifiers
Jmol-3D images	Image
SMILES CCC(C)O
Properties
Chemical formula	C4H10O
Molar mass	74.12 g/mol
Appearance	Colorless liquid
Density	0.8063 g/cm3 (at 20 °C)
Melting point	−115 °C (−175 °F; 158 K)
Boiling point	98 to 100 °C (208 to 212 °F; 371 to 373 K)
Solubility in water	125 g/l (at 20 °C)
Solubility	Miscible with diethyl ether, ethanol Very soluble in acetone
Vapor pressure	1.67 kPa (at 20 °C)
Thermochemistry
Std molar entropy (So298)	213.1 J·K-1mol-1
Std enthalpy of formation (ΔfHo298)	−343.3–−342.1 kJ·mol-1
Hazards
Safety data sheet	ScienceLab
Flash point	22 to 27 °C
Related compounds
Related compounds	Butanol Methyl ethyl ketone
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

sec-Butanol or 2-butanol is an isomer of butanol, mainly used as a precursor to the more common methyl ethyl ketone.

Properties

Chemical

sec-Butanol can be oxidized to butanone.

Physical

2-Butanol is a colorless liquid, with a strong smell. It melts at −115 °C and boils at 99.5 °C, just slightly below the boiling point of water.

Availability

2-Butanol is sold by various chemical suppliers.

Preparation

Can be made by reducing butanone.

Projects

• Make butanone

Handling

Safety

sec-Butanol is prone to forming explosive peroxide over the course of several years, so it's best to check it periodically.

Storage

In closed bottles, in the solvent cabinet.

Disposal

sec-Butanol can be safely burned, unless it has peroxides.

References

Relevant Sciencemadness threads

• Reducing 2-butanone to 2-butanol