right|thumb|One can produce a tar-like substance from corn stalks by heating them in a microwave oven. This process is known as pyrolysis. Tar is a dark brown or black viscous liquid of hydrocarbons and free carbon, obtained from a wide variety of organic materials through destructive distillation. Tar can be produced from carbon-rich materials such as coal, wood, petroleum, peat, and other organic matter.
AI overview
Tar is a dark, thick liquid made up of hydrocarbons and carbon that's produced by heating carbon-rich materials like coal, wood, and peat in a process called destructive distillation. It has been historically important as a useful material derived from various organic sources, and can even be made from unexpected materials like corn stalks using heat.
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Article
7 sectionsContents
- Terminology
- Wood tar
- Uses
- Coal tar
- See also
- References
- External links
right|thumb|One can produce a tar-like substance from corn stalks by heating them in a microwave oven. This process is known as pyrolysis. Tar is a dark brown or black viscous liquid of hydrocarbons and free carbon, obtained from a wide variety of organic materials through destructive distillation. Tar can be produced from carbon-rich materials such as coal, wood, petroleum, peat, and other organic matter.
Mineral products resembling tar can be produced from fossil hydrocarbons, such as petroleum. Coal tar is produced from coal as a byproduct of coke production.