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Substance Name: Chitin unspecified
RN: 1398-61-4


  • A linear polysaccharide of beta-1->4 linked units of ACETYLGLUCOSAMINE. It is the second most abundant biopolymer on earth, found especially in INSECTS and FUNGI. When deacetylated it is called CHITOSAN.
  • Cellulose like biopolymer consisting predominantly of unbranched chains of beta-(1->4)-2-acetamido--2-deoxy-D-glucose. [Merck Index]

Molecular Formulas

  • C30-H50-N4-O19
  • Unspecified

Molecular Weight

  • 627.593

Classification Code

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

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Other Resources (Internet Locators)

Names and Synonyms

Name of Substance

  • Chitin
  • Chitin unspecified

MeSH Heading

  • Chitin


  • Chitan, N-acetyl-
  • Chitin
  • Chitin Tc-L
  • Chitina
  • Chitina [Italian]
  • Clandosan
  • EINECS 215-744-3
  • EPA Pesticide Chemical Code 128991
  • HSDB 7215
  • Kimitsu Chitin
  • Regitex FA

Systematic Name

  • Chitin

Registry Numbers

CAS Registry Number

  • 1398-61-4


  • 8SH93A7QWW

Other Registry Numbers

  • 1548444-27-4
  • 191802-95-6
  • 9043-70-3

System Generated Number

  • 0001398614

Structure Descriptors



Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 intravenous 50mg/kg (50mg/kg) LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA Bolletino della Societe Italiana di Biologia Sperimentale. Vol. 44, Pg. 1685, 1968.