Butane

Butane
Properties
AppearanceColorless gas
BoilingPt−0.5 °C (272.6 K)
Density600 g/l, liquid (0 °C, 1 Atmosphere (unit)atm)
Density2.48 g/L, gas (15 °C, 1 Atmosphere (unit)atm)
MeltingPt−138.4 °C (135.4 K)
Solubility6.1 mg/100 ml (20 °C)
Hazards
Autoignition500 °C
EUClassHighly flammable (F+)
FlashPt−60 °C
Related compounds
Functionalkanes
OtherCpdsIsobutane; Cyclobutane
OtherFunctionsPropane; Pentane
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Butane, also called ''n''-butane, is the unbranched alkane with four carbon atoms, CH3CH2CH2CH3. ''Butane'' is also used as a collective term for ''n''-butane together with its only other isomer, isobutane (also called methylpropane), CH(CH3)3.

Butanes are highly flammable, colorless, odorless, easily liquefied gases. The name butane comes from the roots but- and -ane.


Image:Butane-2D-Skeletal.svg|''n''-Butane
Image:I-Butane-2D-Skeletal.svg|Isobutane
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