,Phase equilibria in hydrocarbon systems. XX. Isobaric heat capacity of gaseous propane, n-butane, isobutane, and n-pentane,Ind. Eng. Chem., 1937, 29, 1309-1314. 
FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, consider initial evacuation for 1600 meters (1 mile) in all directions. In fires involving Liquefied Petroleum Gases (LPG) (); Butane, (); Butylene, (); Isobutylene, (); Propylene, (); Isobutane, (); and Propane, (), also refer to BLEVE - SAFETY PRECAUTIONS (). (ERG, 2016)
paraffin hydrocarbon, 1875, from , hydrocarbon from , a product of fermentation found in rancid butter, from Latin (see (n.)) + chemical suffix .
butane bu·tane (byōō'tān')
Either of two isomers of a gaseous hydrocarbon produced synthetically from petroleum and used as a refrigerant, and aerosol propellant and in the manufacture of synthetic rubber.
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