Description

Sodium Carboxymethyl Dextran is a chemically modified polysaccharide derivative, where carboxymethyl groups are introduced onto the dextran backbone, followed by conversion to the sodium salt form. This modification imparts enhanced water solubility, ionic character, and functionality, making it a valuable biopolymer for advanced material science and life science applications. It is particularly sought after by researchers and manufacturers in the pharmaceutical, biomedical, and cosmetic industries for its biocompatibility and tunable properties.

Application

• Pharmaceutical Excipient: Used as a stabilizer, viscosity modifier, or controlled-release matrix in tablet and capsule formulations.
• Biomedical Hydrogels: Serves as a key component in the fabrication of injectable or implantable hydrogels for tissue engineering and drug delivery systems.
• Protein Conjugation & Carrier: Acts as a soluble polymer carrier to improve the stability, solubility, and circulation time of therapeutic proteins and peptides.
• Chromatography Media: Utilized in the preparation of ion-exchange or affinity chromatography resins for the purification of biomolecules.
• Cosmetic Formulations: Functions as a film-forming agent, texture enhancer, and moisturizer in skincare and haircare products.
• Diagnostic Reagents: Employed in the development of diagnostic assays and contrast agents due to its biocompatibility and functionalizability.

Basic Information

Product Name	Sodium Carboxymethyl Dextran
CAS No.	39422-83-8
Molecular Formula	(C6H7O2(OH)2OCH2COONa)n
Molecular Weight	Variable (Polymer)
Synonyms	Carboxymethyl Dextran Sodium Salt; Dextran Carboxymethyl Ether Sodium Salt; CM-Dextran Sodium Salt; Sodium CM-Dextran; Carboxymethyldextran Sodium; Dextrin Carboxymethyl Ether Sodium Salt; Polydextran Carboxymethyl Ether Sodium Salt
EINECS	Contact for details

Quality Control

Our Sodium Carboxymethyl Dextran is produced under a strict quality management system. Each batch is subjected to rigorous analytical testing to ensure consistency in parameters such as degree of substitution, molecular weight distribution, and purity. Certificates of Analysis (COA) detailing specific results are provided with every shipment. We can support compliance requirements for research and cGMP manufacturing.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	White to off-white powder or fibrous solid
Identification (IR)	Complies
Degree of Substitution (DS)	0.2 - 1.2 (Customizable)
Molecular Weight (Average)	10 kDa - 500 kDa (Customizable)
pH (1% Solution)	6.0 - 8.0
Loss on Drying	≤ 10.0 %
Residue on Ignition (Sulfated Ash)	15.0 - 30.0 %
Heavy Metals	≤ 20 ppm

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