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Substance Name: Residual oils (petroleum), deisobutanizer tower
RN: 68478-16-0


  • TSCA Definition 2008: A complex residuum from the atmospheric distillation of the butane-butylene stream. It consists of aliphatic hydrocarbons having carbon numbers predominantly in the range of C4 through C6.

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


  • Deisobutanizer tower bottoms
  • EINECS 270-795-9

Systematic Names

  • Residual oils (petroleum), deisobutanizer tower
  • Residual oils, petroleum, deisobutanizer tower

Superlist Name

  • Residual oils, (petroleum), deisobutanizer tower

Registry Numbers

CAS Registry Number

  • 68478-16-0

System Generated Number

  • 0068478160