Description

Carboxymethyl Starch is a modified starch derivative, produced by the carboxymethylation of native starch, resulting in an anionic polymer with enhanced solubility and stability. This modification is critical for applications requiring superior thickening, binding, and water retention properties compared to unmodified starches. It is an essential functional ingredient for industries such as food processing, pharmaceuticals, textiles, and paper manufacturing, where consistent performance and quality are paramount.

Application

• Food Industry: Acts as a thickener, stabilizer, and binder in sauces, soups, desserts, and low-fat products, improving texture and mouthfeel.
• Pharmaceuticals: Used as a disintegrant and binder in tablet formulations, and as a suspending agent in liquid preparations.
• Paper Manufacturing: Serves as a strength additive and coating agent to improve paper quality, printability, and surface smoothness.
• Textile Industry: Employed as a sizing agent for warp yarns to reduce breakage and improve weaving efficiency.
• Detergents & Cleaners: Functions as a soil suspending agent and anti-redeposition agent in laundry and dishwashing detergents.
• Oil Drilling Fluids: Utilized as a fluid loss control additive and viscosity modifier in water-based drilling muds.
• Cosmetics & Personal Care: Used as a thickener and emulsion stabilizer in creams, lotions, and toothpaste.
• Adhesives: Acts as a biodegradable and renewable component in adhesive formulations.

Basic Information

Product Name	Carboxymethyl Starch
CAS No.	9057-06-1
Molecular Formula	(C6H7O2(OH)2OCH2COONa)n
Molecular Weight	Variable (Polymer)
Synonyms	Sodium Carboxymethyl Starch; CMS; Starch Gum; Carboxymethyl Starch Sodium; Sodium Starch Glycolate; Explotab; Primojel; Glycolate Starch Sodium Salt; Modified Starch E466 (when used as food additive); Carboxymethyl Ether Starch Sodium Salt
EINECS	Contact for details

Quality Control

Our Carboxymethyl Starch is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for parameters such as degree of substitution, viscosity, pH, and purity. Certificates of Analysis (COA) are provided with every shipment. We can supply grades compliant with relevant standards, including Food Chemical Codex (FCC) and pharmacopeial monographs (USP/NF, EP, JP) for pharmaceutical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept away from high humidity to prevent caking and degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White or off-white, free-flowing powder
Identification (IR)	Conforms
Assay (as Sodium Carboxymethyl Starch)	Min. 98.0%
Degree of Substitution (D.S.)	0.2 - 0.8 (Grade dependent)
pH (1% Solution)	6.0 - 8.5
Viscosity (Brookfield, 2% Solution)	Grade dependent (cP)
Loss on Drying	Max. 10.0%
Residue on Ignition (Sulfated Ash)	10.0% - 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Microbiological Control (TPC)	≤ 1000 cfu/g

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