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Oil
From Wikipedia, the free encyclopedia
For the fossil fuel, see Petroleum. For other uses, see Oil (disambiguation).


General structure of a triglyceride, the main constituent of vegetable oil and animal fats


Synthetic motor oil being poured.
An oil is a substance that is in a viscous liquid state ("oily") at ambient temperatures or slightly warmer, and is both hydrophobic (immiscible with water) and lipophilic (miscible with other oils, literally). This general definition includes compound classes with otherwise unrelated chemical structures, properties, and uses, including vegetable oils, petrochemical oils, and volatile essential oils. Oil is a nonpolar substance.
The term oil is often used colloquially to refer to petroleum.

Contents [hide]
1 Etymology
2 Types of oils
2.1 Mineral oil
2.2 Organic oil
3 Applications
3.1 Food oils
3.2 Fuel
3.3 Heat transport
3.4 Lubrication
3.5 Painting
3.6 Petrochemicals
4 Other Usages
4.1 Religion
5 See also
6 References
[edit]Etymology

Oil is a term used to refer to certain diverse and unrelated compounds sharing the same properties while ignoring related compounds. The compounds found in cooking oil are very similar, almost identical, to those found in butter and very different from those found in diesel fuel, but while diesel is an oil, butter is not. Indeed diesel is once again very similar to natural gas, but gas is certainly not oil. This disparity stems partly from the fact that oils must be liquid at room temperature, and only certain liquid chemicals in many unrelated families are recognised, collectively, as 'oil'.
[edit]Types of oils

[edit]Mineral oil
All oils, with...