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Table 1

Properties of chitosans tested

ChitosansMolecular weight (Da)Degree of deacetylation (%)Viscosity (mPascal-seconds)Source
MW5,000 5 × 103 90 ≤5 a 
MW 50,000 5 × 104–8 × 104 90 16–30 a 
MW 100,000 1 × 105–3 × 105 90 200–500 b 
MW 600,000 6 × 105–8 × 105 90 50–200 b 
MW 1,000,000 ≥106 90 5,501–12,500 a 
70% DD n/a 68–73 ≤7 a 
75% DD n/a 73–78 ≤7 a 
80% DD n/a 78–83 ≤7 a 
85% DD n/a 83–88 ≤7 a 
90% DD n/a 88–93 ≤7 a 
95% DD n/a ≥93 ≤7 a 
Acetate n/a 80–95 ≥5 a 
Acetate-SK n/a n/a n/a c 
Carboxymethyl n/a 80–95 5–300 a 
HCl n/a 80–95 2–200 a 
Lactate n/a 80–95 ≥5 a 
Lactate-SK n/a n/a n/a c 
ChitosansMolecular weight (Da)Degree of deacetylation (%)Viscosity (mPascal-seconds)Source
MW5,000 5 × 103 90 ≤5 a 
MW 50,000 5 × 104–8 × 104 90 16–30 a 
MW 100,000 1 × 105–3 × 105 90 200–500 b 
MW 600,000 6 × 105–8 × 105 90 50–200 b 
MW 1,000,000 ≥106 90 5,501–12,500 a 
70% DD n/a 68–73 ≤7 a 
75% DD n/a 73–78 ≤7 a 
80% DD n/a 78–83 ≤7 a 
85% DD n/a 83–88 ≤7 a 
90% DD n/a 88–93 ≤7 a 
95% DD n/a ≥93 ≤7 a 
Acetate n/a 80–95 ≥5 a 
Acetate-SK n/a n/a n/a c 
Carboxymethyl n/a 80–95 5–300 a 
HCl n/a 80–95 2–200 a 
Lactate n/a 80–95 ≥5 a 
Lactate-SK n/a n/a n/a c 

a, Heppe Medical Chitosan Gmbh, Halle, Germany; b, Acros Organics, Bridgewater, NJ, USA; c, HaloSource, Bothell, WA, USA.

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