Description

Starch, Carboxymethyl Ether, Polymer With (Chloromethyl)Oxirane CAS NO 59419-62-4 is a chemically modified starch derivative, specifically a cross-linked carboxymethyl starch. This engineered polymer offers enhanced stability and functional properties compared to native starch, making it a valuable specialty chemical for demanding industrial applications. It is primarily sought after by formulators in the pharmaceutical, personal care, and advanced materials sectors who require a multifunctional, bio-based rheology modifier and film-forming agent.

Application

• Pharmaceutical Excipient: Used as a tablet disintegrant, binder, and controlled-release matrix former in solid dosage formulations.
• Personal Care & Cosmetics: Functions as a thickener, stabilizer, and sensory modifier in creams, lotions, and hair care products.
• Advanced Materials: Acts as a biodegradable film-forming agent and rheology modifier in coatings and specialty adhesives.
• Food Industry (where compliant): Potential use as a texturizer and stabilizer in specific food systems, subject to regulatory approval.
• Industrial Applications: Employed as a water-retention agent and viscosity enhancer in ceramic, textile, and paper processing.

Basic Information

Product Name	Starch, Carboxymethyl Ether, Polymer With (Chloromethyl)Oxirane
CAS No.	59419-62-4
Molecular Formula	(C6H7O2(OH)2CH2COONa)n (cross-linked)
Molecular Weight	High Polymer (Variable)
Synonyms	Cross-linked Carboxymethyl Starch; Sodium Carboxymethyl Starch, Cross-linked; CMS-Na (Cross-linked); Explotab® (certain grades); Glycolys® (certain grades); Carboxymethyl Starch Ether; Poly[(carboxymethyl)starch] cross-linked with epichlorohydrin
EINECS	Contact for details

Quality Control

Our Starch, Carboxymethyl Ether, Polymer With (Chloromethyl)Oxirane is manufactured under a strict quality management system. Production adheres to cGMP guidelines where applicable, ensuring batch-to-batch consistency for critical parameters such as degree of substitution, viscosity, and particle size distribution. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing specifications for identity, purity, and performance.

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 material is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent moisture absorption, which can affect flow properties and performance.

Specification

Item	Specification
Appearance	White or off-white free-flowing powder
Identification (IR)	Conforms to structure
Assay (as Sodium Carboxymethyl Starch)	Contact for details
Degree of Substitution (DS)	Typical range: 0.2 - 0.8 (Customizable)
pH (1% aqueous solution)	5.5 - 7.5
Loss on Drying	≤ 10.0 %
Heavy Metals	≤ 20 ppm
Microbiological Control (for Pharma Grade)	Meets USP/EP requirements

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