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About NGLs
NGLs are components of raw natural gas that are processed into liquid form at fractionators (separators). They can also be extracted from crude oil during the refining process.

Typical NGLs are: ethane (C2H6), propane (C3H8), normal butane (n-C4H10), isobutene (i-C4 H10), and natural gasoline (C5H12).

When processed and purified into finished products, all of these are collectively referred to as NGLs. Natural gasoline is also referred to as condensate.

NGLs are the main feedstock for steam crackers in North America, where they are converted into olefins. Other uses include blending to produce gasoline additives (isobutane) and heat or fuel (butane, propane). NGLs are priced in cents per gallons via pipeline at various US hubs. The main one is Mont Belvieu, Texas. Others include Conway and Bushton, Kansas; Napoleonville, Louisiana; and Hattiesburg, Mississippi. NGLs trade on a spot basis, having moved away from negotiated contract pricing in the 1980s.
About Olefins
About Polymers