Section 2(f) in The Liquefied Petroleum Gas (Regulation Of Use In Motor Vehicles) Order, 2001
(f)"auto liquefied petroleum gas (auto LPG)" means a mixture of certain light hydrocarbons derived from petroleum, which are gaseous at normal ambient temperature and atmospheric pressure but may be condensed to the liquid state at normal ambient temperature by the application of moderate pressure, and which conforms to Indian Standard specification No. IS: 14861, as amended from time to time;
