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Why is petroleum known as crude oil?

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Anonymous

14y ago
Updated: 8/17/2019

Crude oil straight out of the ground is not uniform (clean), but is composed of many fractions which can be extracted simply by weight.

Other fractions can be 'cracked' by heat, pressure, solvents and distillation.

To distinguish from other, purer oils, the basic material is called 'crude'.

Strictly speaking, 'petroleum' itself is a fraction of crude.

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Wiki User

14y ago

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