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Substance Name: Hydrocarbons, C4, ethylene-manuf.-by-product
RN: 68476-52-8


  • TSCA Definition 2017: A complex combination of hydrocarbons produced by distillation of products from a cracking process in an ethylene plant. It consists predominantly of C4 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


  • Butane-butylene concentrate
  • EC 270-691-3
  • EINECS 270-691-3

Systematic Names

  • Hydrocarbons, C4, ethylene-manuf-by-product
  • Hydrocarbons, C4, ethylene-manuf.-by-product

Superlist Name

  • Hydrocarbons, C4, ethylene-manuf.-by-product

Registry Numbers

CAS Registry Number

  • 68476-52-8

System Generated Number

  • 0068476528