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Substance Name: Naphtha (petroleum), isomerization
RN: 64741-70-4


  • TSCA Definition 2018: A complex combination of hydrocarbons obtained from catalytic isomerization of straight chain paraffinic C4 through C6 hydrocarbons. It consists predominantly of saturated hydrocarbons such as isobutane, isopentane, 2,2-dimethylbutane, 2-methylpentane, and 3-methylpentane.

Molecular Formula

  • Unspecified

Classification Code

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Links to Resources

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Names and Synonyms


  • EC 265-073-5
  • EINECS 265-073-5

Systematic Names

  • Naphtha (petroleum), isomerization
  • Naphtha, petroleum, isomerization

Superlist Names

  • Isomerization naphtha
  • Naphtha, (petroleum), isomerization

Registry Numbers

CAS Registry Number

  • 64741-70-4

System Generated Number

  • 0064741704