Characters:  Dissolve in weak organic acid, insoluble in water when dried, bio-degradable. Widely be used in medical dressing and antibacterial fibre.

 Appearances:  Yellowish to yellow powder.

 Index:
            Deacetylation≥90%,
            Viscosity≤10mpa.s,
            Molecular Weight: 7,000~10,000,
            Ash≤1.0%.