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Substance Name: Gases (petroleum), preflash tower off, crude distn.
RN: 68919-08-4


  • TSCA Definition 2018: A complex combination produced from the first tower used in the distillation of crude oil. It consists of nitrogen and saturated aliphatic hydrocarbons having carbon numbers predominantly in the range of C1 through C5.

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


  • EINECS 272-881-1
  • Preflash tower off-gas

Systematic Names

  • Gases (petroleum), preflash tower off crude distn.
  • Gases (petroleum), preflash tower off, crude distn.
  • Gases, petroleum, preflash tower off, crude distn.

Superlist Name

  • Gases, (petroleum), preflash tower off, crude distn.

Registry Numbers

CAS Registry Number

  • 68919-08-4

System Generated Number

  • 0068919084