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Substance Name: Residues (petroleum), atmospheric
RN: 68333-22-2


  • TSCA Definition 2018: A complex residuum from atmospheric distillation of crude oil. It consists of hydrocarbons having carbon numbers predominantly greater than C11 and boiling above approximately ( This stream is likely to contain 5 wt.% or more of 4- to 6-membered condensed ring aromatic hydrocarbons.

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


  • EC 269-777-3
  • EINECS 269-777-3
  • Reduced crude (petroleum)

Systematic Names

  • Residues (petroleum), atmospheric
  • Residues, petroleum, atmospheric

Superlist Name

  • Residues, (petroleum), atmospheric

Registry Numbers

CAS Registry Number

  • 68333-22-2

System Generated Number

  • 0068333222