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Substance Name: Hydrocarbons, C4-5, tert-amylene concentrator by-product
RN: 68647-61-0


  • TSCA Definition 2017: A complex combination of hydrocarbons produced during tert-amylene production. It consists predominantly of hydrocarbons having carbon numbers predominantly in the range of C4 through C5.

Molecular Formula

  • Unspecified

Classification Code

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Links to Resources

NLM Resources (File Locators)

Other Resources (Internet Locators)

Names and Synonyms


  • EINECS 271-961-3
  • Isopentane raffinate, by-product
  • Tertiary amylene concentrate, by-product

Systematic Name

  • Hydrocarbons, C4-5, tert-amylene concentrator by-product

Registry Numbers

CAS Registry Number

  • 68647-61-0

System Generated Number

  • 0068647610