Description

O,n-Carboxymethylchitosan is a water-soluble, chemically modified derivative of chitosan, featuring carboxymethyl groups substituted on both the hydroxyl and amino sites. This bifunctional modification significantly enhances its solubility across a wide pH range and imparts superior chelating, film-forming, and moisture-retention properties compared to native chitosan. It is a critical functional biopolymer sought by industries requiring advanced, biocompatible materials for pharmaceutical formulation, cosmetic enhancement, and agricultural innovation. The compound is identified by CAS number 107043-88-9.

Application

• Pharmaceutical Excipient & Drug Delivery: Used as a matrix for controlled-release tablets, a stabilizer in suspensions, and a carrier for targeted drug delivery systems due to its mucoadhesive and pH-responsive properties.
• Cosmetic & Personal Care Formulations: Serves as a high-performance moisturizing agent, thickener, and film-former in creams, lotions, and hair care products, providing long-lasting hydration and a smooth skin feel.
• Wound Dressing & Biomedical Materials: Incorporated into hydrogels, sponges, and non-woven fabrics for advanced wound care, promoting hemostasis, tissue regeneration, and acting as a barrier against infection.
• Agricultural Technology: Functions as a seed coating agent, soil conditioner, and a biodegradable carrier for slow-release fertilizers and pesticides, enhancing crop yield and stress resistance.
• Food Industry Additive: Employed as a natural preservative, edible coating for fruits/vegetables, and a texture modifier in functional foods, leveraging its antimicrobial and film-forming capabilities.
• Wastewater Treatment: Acts as a potent, eco-friendly flocculant and heavy metal ion chelator for the purification of industrial effluent and drinking water.

Basic Information

Product Name	O,n-Carboxymethylchitosan
CAS No.	107043-88-9
Molecular Formula	(C8H13NO6)n (Representative unit)
Molecular Weight	Variable (Polymer)
Synonyms	N,O-Carboxymethyl Chitosan; Carboxymethyl Chitosan; CM-Chitosan; Chitosan Carboxymethyl Ether; N-Carboxymethylchitosan; O-Carboxymethyl Chitosan; Water-Soluble Chitosan Derivative; Poly[D-glucosamine-co-N,O-carboxymethyl-D-glucosamine]
EINECS	Contact for details

Quality Control

Our O,n-Carboxymethylchitosan is manufactured under a strict quality management system. Each batch is subjected to comprehensive analytical testing to ensure consistent purity, substitution degree, and functional performance. While we offer various grades, our standard product meets specifications suitable for industrial and research applications. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive) and must be stored in a cool, dry place at 15-25°C. For long-term stability, consider storage under desiccant or in a moisture-proof environment. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to light yellow powder
Identification (IR)	Conforms
Degree of Substitution (N,O)	≥ 0.80
Assay (as dry basis)	≥ 90.0%
pH (1% Solution)	6.0 - 8.0
Loss on Drying	≤ 10.0%
Ash Content	≤ 1.0%
Viscosity (1% Solution)	10 - 500 mPa·s (Grade dependent)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.