Carboxymethyl Chitosan

Carboxymethyl Chitosan, offered in both O- and N-carboxymethyl forms, is produced by reacting chitin with chloroacetic acid under alkaline conditions, yielding a fully water-soluble derivative with strong heavy-metal binding capacity used in cosmetics, sustained-release drug formulations, agriculture, and water treatment. Supplied by Jiangsu Aoxin Biotechnology Co., Ltd in pharmaceutical grade as a trader rather than a manufacturer, with no samples provided, it meets an in-house specification calling for a white to slightly yellow powder with degree of substitution ≥80%, pH 7–9, and heavy metals ≤10 ppm, and is sold across North America, Central/South America, Western and Eastern Europe, and Asia.