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Fuel additives in the United States are regulated under section 211 of the Clean Air Act (as amended in January 1995). The Environmental Protection Agency (EPA) requires the registration of all fuel additives which are commercially distributed for use in highway motor vehicles in the United States, [8] and may require testing and ban harmful additives.
Methylcyclopentadienyl manganese tricarbonyl (MMT or MCMT) is an organomanganese compound with the formula (C 5 H 4 CH 3)Mn(CO) 3.Initially marketed as a supplement for use in leaded gasoline, MMT was later used in unleaded gasoline to increase the octane rating.
In 1986, Union Carbide's auto products, which included Prestone and Simoniz, were subject to a leveraged buyout. The resulting company, First Brands, was purchased by Clorox in 1998. In the fall of 2006, STP fuel additives began being used in Marathon gasolines, likely to compete with Chevron's Techron additive. [4]
Several factors must be assessed to determine if a chemical is a suitable substitute including potential hazards, exposure, technical feasibility, and low-budget considerations. [3] After substitutes are proposed, the risks of each substitute are compared to one another and tested until a suitable substitution is found.
Exxon Mobil is one of the largest oil-and-gas companies in the world, with more than 11,000 gas stations across the U.S.In 2023, the company generated $36 billion in profits and $55.4 billion in ...
1,1-Difluoroethane, or DFE, is an organofluorine compound with the chemical formula C 2 H 4 F 2.This colorless gas is used as a refrigerant, where it is often listed as R-152a (refrigerant-152a) or HFC-152a (hydrofluorocarbon-152a).
Many components, such as spark plugs or a gas-powered engine, can make maintenance costs expensive. “Without spark plugs to replace or oil to change, electric vehicles have a clear leg up on ...
HFCs are also used in insulating foams, aerosol propellants, as solvents and for fire protection. They may not harm the ozone layer as much as the compounds they replace, but they still contribute to global warming --- with some like trifluoromethane having 11,700 times the warming potential of carbon dioxide. [ 3 ]