Natural Gas Liquids (NGL)
Asia-Pacific Economic Cooperation (APEC)

European Commission - Eurostat
NGL are liquid or liquefied hydrocarbons recovered from natural gas in separation facilities or gas processing plants. Natural gas liquids include ethane, propane, butane (normal and iso-), (iso) pentane and pentanes plus (sometimes referred to as natural gasoline or plant condensate).

International Energy Agency (IEA)
NGL are liquid or liquefied hydrocarbons recovered from natural gas in separation facilities or gas processing plants. Natural gas liquids include ethane, propane, butane (normal and iso-), (iso) pentane and pentanes plus (sometimes referred to as natural gasoline or plant condensate).

Latin American Energy Organization (OLADE)
Liquefied gas is produced in two transformation centers:

a) Oil refineries,
b) Gas treatment centers.

United Nations Economic Commission for Europe (UNECE)
NGL are liquid or liquefied hydrocarbons recovered from natural gas in separation facilities or gas processing plants. Natural gas liquids include ethane, propane, butane (normal and iso-), (iso) pentane and pentanes plus (sometimes referred to as natural gasoline or plant condensate).

UNSD Energy Statistics Section
Liquid or liquefied hydrocarbons produced in the manufacture, purification and stabilization of natural gas. NGLís include, but are not limited to, ethane, propane, butane, pentane, natural gasolene, and plant condensate. NGLís are either distilled with crude oil in refineries, blended with refined petroleum products or used directly depending on their characteristics.

Natural gasoline: Light spirit extracted from wet natural gas, often in association with crude petroleum. It is used as a petroleum refinery and petrochemical plant input and is also used directly for blending with motor spirit without further processing.

Plant condensate Ė Liquid hydrocarbons condensed from wet natural gas in natural gas processing plants. It is used as a petroleum refinery input.

World Energy Council (WEC)
Natural gas liquids (NGLs) are hydrocarbons that exist in the reservoir as constituents of natural gas but which are recovered as liquids in separators, field facilities or gas-processing plants. Natural gas liquids include (but are not limited to) ethane, propane, butanes, pentanes, natural gasoline and condensate; they may include small quantities of non-hydrocarbons.