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Substance Name: Sulfite liquors and Cooking liquors, spent
RN: 66071-92-9


  • TSCA Definition 2018: The aqueous solution resulting from the reaction of lignocellulosic substances (wood or other agricultural fiber sources) with one or more pulping chemicals including those used in the kraft, sulfite, semichemical or other pulping processes. Composition is highly variable and includes excess pulping chemicals, dissolved and degraded cellulose, hemicellulose and lignin.

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 266-111-3
  • Spent pulping liquor
  • Spent sulfite liquor

Systematic Name

  • Sulfite liquors and Cooking liquors, spent

Superlist Name

  • Sulfite liquors and Cooking liquors, spent

Registry Numbers

CAS Registry Number

  • 66071-92-9

System Generated Number

  • 0066071929