|Preferred IUPAC name
|Systematic IUPAC name
Tetracarbane (never recommended)
3D model (JSmol)
|E number||E943a (glazing agents, ...)|
CompTox Dashboard (EPA)
|Molar mass||58.124 g·mol−1|
|Odor||Gasoline-like or natural gas-like|
|Density||2.48 kg/m3 (at 15 °C (59 °F))|
|Melting point||−140 to −134 °C; −220 to −209 °F; 133 to 139 K|
|Boiling point||−1 to 1 °C; 30 to 34 °F; 272 to 274 K|
|61 mg/L (at 20 °C (68 °F))|
|Vapor pressure||~170 kPa at 283 K |
|11 nmol Pa−1 kg−1|
Heat capacity (C)
Std enthalpy of
Std enthalpy of
|NFPA 704 (fire diamond)|
|Flash point||−60 °C (−76 °F; 213 K)|
|405 °C (761 °F; 678 K)|
|NIOSH (US health exposure limits):|
|TWA 800 ppm (1900 mg/m3)|
IDLH (Immediate danger)
|Supplementary data page|
|Butane (data page)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
(what is ?)
Butane (//) or n-butane is an alkane with the formula C4H10. Butane is a highly flammable, colorless, easily liquefied gas that quickly vaporizes at room temperature and pressure. The name butane comes from the root but- (from butyric acid, named after the Greek word for butter) and the suffix -ane. It was discovered in crude petroleum in 1864 by Edmund Ronalds, who was the first to describe its properties, and commercialized by Walter O. Snelling in early 1910s.
Butane is one of a group of liquefied petroleum gases (LP gases). The others include propane, propylene, butadiene, butylene, isobutylene, and mixtures thereof. Butane burns more cleanly than both gasoline and coal.
Similarly, the retained names 'ethane', 'propane', and 'butane' were never replaced by systematic names 'dicarbane', 'tricarbane', and 'tetracarbane' as recommended for analogues of silane, 'disilane'; phosphane, 'triphosphane'; and sulfane, 'tetrasulfane'.