from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of, pertaining to, or derived from a naphthene

from The Century Dictionary and Cyclopedia

  • Derived from naphthene; referring to cyclohexane.


from Wiktionary, Creative Commons Attribution/Share-Alike License

naphthene +‎ -ic


  • The federal government has failed to issue national standards for regulating tar-sands pollutants such as naphthenic acids. latest blog entries

  • The tailing ponds surrounding the tar sands oil operations leak about 1 billion gallons of water a year -- water that includes benzene, cyanide, naphthenic acids, phenols, and a host of other chemicals harmful to fish not to mention human beings.

    Peter Lehner: Don't Drink the Water: When Lax Regulation Meets Dirty Fuels

  • The Ivy Leaguers used aluminum salts of naphthenic and palmitic acids to produce a thickening agent for gasoline.


  • But in Alberta there are a dozen toxic ponds -- among the world's largest pools of such waste -- that contain bitumen, poly-cyclic aromatic hydrocarbons, cyanide and naphthenic acids (carcinogens and fish killers, all).

    Giles Slade: Guest Blog: Dirty Candadian Gas vs America's Green Economy

  • They contain bitumen, phenols, polycyclic aromatic hydrocarbons, cyanide, and naphthenic acids (carcinogens and fish killers all).

    A. Siegel: Tar and Feather...

  • The tailings water doesn't just have leftover bitumen, but contains naphtha and paraffin, which are used in the extraction process, and oil leftovers like benzene, naphthenic acid and polyaromatic hydrocarbon.

    Visit Scenic Alberta

  • Therefore it is the type of hydrocarbon (paraffinic, naphthenic, or aromatic) rather than its specific chemical compounds that is significant in the refining process.

    Hydrocarbon chemistry

  • Some crude oils contain naphthenic (organic) acids, which may become corrosive at temperatures above 450° F when the acid value of the crude is above a certain level.

    Hydrocarbon chemistry

  • It was a compound based on petroleum: a naphthenic distillate containing stearic acid and lithium hydroxide, among other multi-syllabic ingredients.

    In the Presence of the Enemy

  • Under extreme pressure it is at least as good at improving the antiwear properties and load-carrying capacity of both naphthenic and bright-stock base oils.

    5 Uses


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