TrBa

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This artile focuses on [|organic compounds] that are not burned as [|fuel] (see also [|Petroleum product]).
 * Petrochemicals** are [|chemical products] derived from [|petroleum]. Some [|chemical compounds] made from petroleum are also obtained from other [|fossil fuels], such as [|coal] or [|natural gas], or renewable sources such as [|corn] or [|sugar cane].
 * petro cemicals come from a plant**
 * Fractional distillation** is the separation of a [|mixture] into its component [|parts], or [|fractions], such as in separating [|chemical compounds] by their [|boiling point] by heating them to a [|temperature] at which one or more fractions of the compound will vaporize. It is a special type of [|distillation]. Generally the component parts boil at less than 25 °C from each other under a pressure of one [|atmosphere] ([|atm]). If the difference in [|boiling points] is greater than 25 °C, a [|simple distillation] is used.