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Substance Name: Sludges (petroleum), chemically neutralized
RN: 64743-07-3


  • TSCA Definition 2018: A complex combination of substances obtained from the oil insoluble sludge that results from treating a petroleum stock with sulfuric acid, by contacting with sodium hydroxide or sodium carbonate solution. It consists predominantly of sodium salts of sulfonic and carboxylic acids, phenolic compounds, and other acidic compounds found in petroleum streams, together with water and hydrocarbons of molecular weight above 1000.

Molecular Formula

  • Unspecified

Classification Code

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Names and Synonyms


  • EINECS 265-213-5

Systematic Names

  • Sludges (petroleum), chemically neutralized
  • Sludges, petroleum, chemically neutralized

Superlist Name

  • Sludges, (petroleum), chemically neutralized

Registry Numbers

CAS Registry Number

  • 64743-07-3

System Generated Number

  • 0064743073