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Substance Name: Lignin
RN: 9005-53-2


  • The most abundant natural aromatic organic polymer found in all vascular plants. Lignin together with cellulose and hemicellulose are the major cell wall components of the fibers of all wood and grass species. Lignin is composed of coniferyl, p-coumaryl, and sinapyl alcohols in varying ratios in different plant species. (From Merck Index, 11th ed)

Molecular Formula

  • Unspecified

Classification Code

  • TSCA Flag XU (Exempt from Reporting under Chemical Data Reporting Rule)
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Links to Resources

Names and Synonyms

Name of Substance

  • Lignin

MeSH Heading

  • Lignin


  • EINECS 232-682-2
  • Lignin

Systematic Name

  • Lignin

Superlist Names

  • Lignin
  • Lignin solids

Registry Numbers

CAS Registry Number

  • 9005-53-2

Other Registry Numbers

  • 37222-03-0
  • 37226-40-7
  • 56690-27-8
  • 8072-92-2
  • 9062-69-5

System Generated Number

  • 0009005532