naphthene

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naphthene

[′naf‚thēn]
(organic chemistry)
Any of the cycloparaffin derivatives of cyclopentane (C5H10) or cyclohexane (C6H12) found in crude petroleum.
References in periodicals archive ?
The working assumption behind this treatment strategy is that radiation efficiently disrupts the cyclic structure of constituents within naphthenic acids, neutralizing their toxic effect and leaving the local environment clear for biological activity.
The others segment primarily comprises synthetic and naphthenic base oils.
Nynas recently acquired Shell's naphthenic oil refinery in Hamburg, Germany.
05ml of mineral oil (selected from one of the following groups of light mixtures of alkanes in the C15 to C40 range from a non-vegetable source, a distillate of petroleum, a paraffinic oil based on n-alkanes, naphthenic oil based on cycloalkanes, aromatic oil based on aromatic hydrocarbons) and a double headed brush in which the front brush has coarse bristles for scrubbing and a rubber brush for deep cleaning.
Its naphtha output consists of naphthenic grades suitable for re-formulation into gasoline.
This book reviews the identification of naphthenic acids in crude oil and their influence on refinery process units.
Additionally, exposure to chemical compounds, such as naphthenic acids, primary sclerosing cholangitis, anabolic steroids, ulcerative colitis, intrahepatic lithiasis, Caroli disease and multiple liver cysts are other recognized predisposing factors for the development of cholangiocarcinomas in humans (AL-BAHRANI et al.
KLT recommended REFLO 68A because it's an ammonia refrigeration compressor fluid used in industrial refrigeration systems--one that is formulated to outperform solvent refined paraffinic and naphthenic refrigerant oils.
WHAT incendiary liquid is a mixture of naphthenic and |palmitic acids?
As it is well known [12], the carboxylic and naphthenic acids are important surface active substances (SASt) and petroleum fluid components, and for solvation of the oil and gas hydrocarbons they form insoluble salts with the divalent calcium ([Ca.
The objective of this research is to experimentally determine the stability and compatibility of candidate lubricants (such as naphthenic and paraffinic mineral oils, uncapped and capped polyalkylene glycols, linear, branched and mixed polyolesters, and alkylbenzene) with C[O.