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Substance Name: Hydrocarbon waxes (petroleum), clay-treated microcryst.
RN: 64742-42-3


  • TSCA Definition 2018: A complex combination of hydrocarbons obtained by treatment of a petroleum microcrystalline wax fraction with natural or modified clay in either a contacting or percolation process to remove the trace amounts of polar compounds and impurities present. It consists predominantly of long branched chain hydrocarbons having carbon numbers predominantly in the range of C25 through C50.

Molecular Formula

  • Unspecified

Classification Code

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Links to Resources

NLM Resources (File Locators)

Regulatory Agencies (Superlist Locators)

Other Resources (Internet Locators)

Names and Synonyms


  • Clay treated microcrystalline wax
  • Clay-treated microcryst hydrocarbon waxes (petroleum)
  • EC 265-144-0
  • EINECS 265-144-0

Systematic Names

  • Hydrocarbon waxes (petroleum), clay-treated microcryst.
  • Hydrocarbon waxes, petroleum, clay-treated microcryst.

Superlist Names

  • Hydrocarbon waxes, (petroleum), clay-treated microcryst.
  • Petroleum wax, clay-treated, microcryst.

Registry Numbers

CAS Registry Number

  • 64742-42-3

System Generated Number

  • 0064742423