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.
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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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

naphtha

A distillate of petroleum or coal; generally has low solvency and high volatility; used as a solvent in paints and varnishes.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
A total of 880 ships have so far been loaded (398 Naphta, 382 Kerojet and 100 Gasoil), i.e.
Like Naphta's belief in redemption through suffering, Adrian's sacrificial view of the ineluctable connection of disease and art prevails in the novel.
A sintese teologica atrelada ao materialismo historico nos jovens Bloch e Lukacs levou-os a comparacoes literarias com o personagem Leon Naphta, de Thomas Mann.
REFINERIES OUTPUT IN 2010 In millions of tons REFINED PRODUCTS 4.68 FUEL OIL 2.44 DIESEL FUEL 1.22 GASOLINE 0.57 OTHER 0.45 Solvents 0.12 Naphta 0.09 Asphalt 0.09 Liquified gas 0.06 Final lube 0.05 Fuel gas 0.03 Fuel coke 0.007 Basic lubes 0.002 Kerosene 0.0002 Source O.N.E.
He extends the characteristic Spanish oppression, represented in The Magic Man by the Jesuit Leo Naphta, to include the other reactionary extreme of Europe: Russia and, by extension, Asia.
The solvents used for the solvent-based stains were acetone, n-butyl acetate, xylenes, 2-butoxyethanol, 1-methoxy-2-propanol, toluene, naphta, isobutanol, 1,2,4-trimethylbenzene, butan-1-ol, and 4-hydroxy-4-methyl-2-pentanone.
Las ensenanzas de Settembrini, Naphta y Peeperkorn van senalando y entregando lo que los medicos no saben o desconocen, una estima que es doble: una estima de sustitucion y una estima de suplemento, que permiten nuevas y diferentes maneras de estar, abrir y esclarecer el mundo (37-39).
It did not disclose the quantity of naphta that was contaminated but traders said some 200,000 tons of Rabigh-grade naphtha was found to contain a high amount of MTBE.
It did not disclose the quantity of naphta that was contaminated but traders said some 200,000 tonnes of Rabigh-grade naphtha was found to contain a high amount of MTBE.
Yet upon arriving at the site, he saw only a vast crater of rippling blackness that the agitated mercenaries described as the black corpse of the sun and called by a foreign appellation, naphta .
The allegations were that the ten Customs officials in conspiracy with the private parties, dishonestly and by abuse of their official position facilitated import by undervaluing from Goa Customs during 2005-06, two consignments of Naphta and one consignment of Furnace Oil.