naphtha

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naphtha

(năp`thə, năf`–), term usually restricted to a class of colorless, volatile, flammable liquid hydrocarbon mixtures. Obtained as one of the more volatile fractions in the fractional distillation of petroleumpetroleum,
oily, flammable liquid that occurs naturally in deposits, usually beneath the surface of the earth; it is also called crude oil. It consists principally of a mixture of hydrocarbons, with traces of various nitrogenous and sulfurous compounds.
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 (when it is known as petroleum naphtha), in the fractional distillation of coal tar (coal-tar naphtha), and in a similar distillation of wood (wood naphtha), it is used widely as a solvent for various organic substances, such as fats and rubber, and in the making of varnish. Because of its dissolving property it is important as a cleaning fluid; it is also incorporated in certain laundry soaps. Coal-tar (aromatic) naphthas have greater solvent power than petroleum (aliphatic) naphthas. Originally the term naphtha designated a colorless flammable liquid obtained from the ground in Persia. Later it came to be applied to a number of other natural liquid substances having similar properties. Technically, gasoline and kerosene are considered naphthas.

naphtha

[′naf·thə]
(materials)
Petroleum fraction with volatility between gasoline and kerosine; used as a gasoline ingredient, solvent for paints and rubber, and cleaning solvent.
Aromatic solvent from coal tar, either solvent naphtha or heavy naphtha.

naphtha

A distillate of petroleum or coal; generally has low solvency and high volatility; used as a solvent in paints and varnishes.

naphtha

1. a distillation product from coal tar boiling in the approximate range 80--170?C and containing aromatic hydrocarbons
2. a distillation product from petroleum boiling in the approximate range 100--200?C and containing aliphatic hydrocarbons: used as a solvent and in petrol
3. an obsolete name for petroleum
References in periodicals archive ?
Gavli told reporters that a case had been registered against 10 officials of the Goa Customs and Central Excise department who facilitated the import of naptha and furnace oil by undervaluing them.
38 percent decrease in production of Solvant Naptha while the lubricating oil produce also witnessed 7.
Tenders are invited for Supply and installation and commissioning of siemens panel board at iocl panipat naptha cracker
The release of the findings from a feasibility study on the proposed $600 million naptha cracker plant in Bataan, north of Manila, is imminent after a protracted period of discussions and disagreements between the state owned Philippine National Oil Company (PNOC) and private sector companies.
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The RAZOR Team has identified over 80 vulnerabilities and threats since its creation in 1998, including the recently discovered Naptha, a variety of denial-of-service vulnerabilities that exploit the TCP protocol and cause a variety of service degradation effects.
Tenders are invited for Supply of gas turbine spares to iocl panipat naptha cracker, Panipat, Haryana-132140
5-degree API extra-heavy crude oil produced at the Cerro Negro field is diluted with naptha and transported by pipeline 190 miles to the port of Jose, where the upgrader complex converts the mixture into a 16-degree API crude oil.
Tenders are invited for Supply of valves to iocl panipat naptha cracker, Panipat, Haryana-132140
Both Suncor and Syncrude operate upgraders or refineries in the area to further refine bitumen into useful byproducts such as naptha, fuel oil, and kerosene.