naphthenic acid


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naphthenic acid

[naf′thēn·ik ′as·əd]
(organic chemistry)
Any of the derivatives of cyclopentane, cyclohexane, cycloheptane, or other naphthenic homologs derived from petroleum; molecular weights 180 to 350; soluble in organic solvents and hydrocarbons, slightly soluble in water; used as a paint drier and wood preservative, and in metals production.
References in periodicals archive ?
She reported that within one week, her slow sand filter bioreactors had reduced the naphthenic acid concentration in tailings water samples from 100 mg/liter to 7.
New theory for naphthenic acid corrosivity of Athabasca Oilsands crudes".
The copper plus naphthenic acid formulation was intended to result in the in-situ formation of copper naphthenate (not confirmed by chemical analysis), but generally employed much higher copper levels than the commercial waterborne copper naphthenate system.
com/research/9c8a71/refined_degreased) has announced the addition of the "Refined Degreased Naphthenic Acid (CAS 1338-24-5) Market Research Report 2011" report to their offering.
Sour crude is full of organic acids that, when refined at high temperatures, creates naphthenic acid, which is extremely corrosive to certain metals.
At high concentrations, salts and naphthenic acids would potentially affect fish and other aquatic life.
Tailings contain a host of toxins including bitumen, naphthenic acids, cyanide, phenols and metals such as arsenic, cadmium, chromium, copper, lead and zinc.
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.
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.
These xenobiotic compoundsmight be formed during microbial attack of some important groundwater pollutants, such as fuel oxygenate ethers, alkyl phenols, naphthenic acids and related compounds all possessing already a tertiary alcohol group or an aliphatic side chain which could be converted to it in the course of degradation.
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.