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Gasoline /ËÉ¡Ã¦sÉliËn/, also known as petrol /ËpÉtrÉl/ outside North America, is a transparent, petroleum-derived liquid that is used primarily as a fuel in internal combustion engines. It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives.
The petrol with which we fill our cars, are that fraction of crude which boils (i.e. comes off the fractionating tower) between #40# #^@# and #60# #^@# #C#; these are the isomeric butanes, pentanes, and hexanes. Diesel fuels are commonly longer chain, #C_10# to #C_12#, and typically have the #1^@# of unsaturation.