TCI C0831 Chitosan (CAS 9012-76-4) is a natural cationic polysaccharide derived from chitin, supplied in 25 g and 500 g packs with a stated viscosity range of 200–600 mPa·s under the solution conditions given in the product name. Its free amino groups become protonated in mildly acidic media, enabling interaction with negatively charged surfaces, metal ions, and polyanions. Researchers use it for biopolymer films, drug-delivery particles, water-treatment adsorbents, tissue-engineering scaffolds, and food technology studies. The material is hygroscopic, so weigh it in a well-ventilated area and keep the container tightly closed in a cool, dry place.
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