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Recognized Consensus Standards

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Part B: Supplementary Information Sheet (SIS)
FR Recognition List Number 031 Date of Recognition 08/06/2013 
FR Recognition Number 15-32
Standard
ASTM F2260-03 (Reapproved 2012)e1
Standard Test Method for Determining Degree of Deacetylation in Chitosan Salts by Proton Nuclear Magnetic Resonance (1H NMR) Spectroscopy
Scope/Abstract
1.1 This test method covers the determination of the degree of deacetylation in chitosan and chitosan salts intended for use in biomedical and pharmaceutical applications as well as in Tissue Engineered Medical Products (TEMPs) by high-resolution proton NMR (1H NMR). A guide for the characterization of chitosan salts has been published as Guide F2103.

1.2 The test method is applicable for determining the degree of deacetylation (% DA) of chitosan chloride and chitosan glutamate salts and is valid for % DA values from 50 up to and including 99. It is simple, rapid, and suitable for routine use. Knowledge of the degree of deacetylation is important for an understanding of the functionality of chitosan salts in TEMP formulations and applications. This test method will assist end users in choosing the correct chitosan for their particular application. Chitosan salts may have utility in drug delivery applications, as a scaffold or matrix material, and in cell and tissue encapsulation applications.

Extent of Recognition
Complete standard
Rationale for Recognition
This standard is relevant to medical devices and is recognized on its scientific and technical merit and/or because it supports existing regulatory policies.
Relevant FDA Guidance and/or Supportive Publications
There is no relevant guidance developed at this time.
FDA Technical Contact
 David Kaplan
  FDA/OMPT/CDRH/OSEL/DAM/
  301-796-2519
  david.kaplan@fda.hhs.gov
Standards Development Organization
ASTM ASTM International http://www.astm.org/
FDA Specialty Task Group (STG)
Tissue Engineering
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