![](/template/termwiki/images/likesmall.jpg)
Home > Terms > English, UK (UE) > Unleaded gasoline
Unleaded gasoline
This fuel consists mostly of hydrocarbons and is sometimes enhanced with benzene to increase octane ratings and is used as fuel in internal combustion engines. Unleaded gasoline is manufactured to meet the requirement of new model automobiles in the US since 1975, because in that year catalytic converters were made mandatory for all vehicles sold in the US. Lead was removed from gasoline because lead emissions poison the metals used in catalytic converters. Lead had been added to gasoline since the 1920's as tetraethyllead (TEL), historically referred to as "ethyl. " Exposure to high levels of lead can cause vomiting, diarrhea, convulsions, coma or even death, but lead emissions from automobiles consisted of lead oxide particles which settle out near highways. Lead removal from gasoline in the US has resulted in a clear, measurable decrease in lead in the urban environments in the US.
- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Chemistry; Weather
- Category: Atmospheric chemistry
- Educational Institution: Sam Houston State University
- Product:
- Acronym-Abbreviation:
Other Languages:
Member comments
Terms in the News
Featured Terms
Rush Limbaugh
Born Rush Hudson Limbaugh III (January 12, 1951), an American radio talk show host, conservative political commentator, and an opinion leader in ...
Contributor
Featured blossaries
rufaro9102
0
Terms
41
Blossaries
4
Followers
Robin Williams Famous Movies
![](/template/termwiki/images/likesmall.jpg)
![](https://accounts.termwiki.com/thumb1.php?f=c4b99704-1407823482.jpg&width=304&height=180)
Browers Terms By Category
- Body language(129)
- Corporate communications(66)
- Oral communication(29)
- Technical writing(13)
- Postal communication(8)
- Written communication(6)
Communication(251) Terms
- Investment banking(1768)
- Personal banking(1136)
- General banking(390)
- Mergers & acquisitions(316)
- Mortgage(171)
- Initial public offering(137)
Banking(4013) Terms
- Chocolate(453)
- Hard candy(22)
- Gum(14)
- Gummies(9)
- Lollies(8)
- Caramels(6)
Candy & confectionary(525) Terms
- Industrial automation(1051)
Automation(1051) Terms
- General furniture(461)
- Oriental rugs(322)
- Bedding(69)
- Curtains(52)
- Carpets(40)
- Chinese antique furniture(36)