Description

Carboxymethyl Hydroxyethylcellulose (CMHEC) is a high-performance, water-soluble cellulose ether derivative, synthesized by the carboxymethylation and hydroxyethylation of cellulose. This dual-functional modification provides a unique combination of thickening, water retention, and film-forming properties, making it a superior rheology modifier and stabilizer. It is essential for formulators in industries such as construction, pharmaceuticals, and personal care who require precise viscosity control and enhanced product stability under varying ionic conditions.

Application

• Construction Materials: Key additive in cement-based tile adhesives, grouts, self-leveling compounds, and plaster for superior water retention, workability, and sag resistance.
• Oilfield Drilling Fluids: Functions as a viscosifier and fluid loss control agent in water-based drilling muds, providing stability in high-temperature and saline environments.
• Pharmaceuticals: Used as a binder, sustained-release matrix former, and stabilizer in tablet formulations and topical gels.
• Personal Care & Cosmetics: Acts as a thickener, emulsion stabilizer, and film-former in shampoos, lotions, creams, and toothpaste.
• Paints & Coatings: Serves as a thickener and anti-settling agent in latex paints and water-based coatings to improve application properties.
• Ceramics: Employed as a binder and plasticizer in ceramic bodies and glazes to improve green strength and shaping.
• Detergents & Household Cleaners: Used to control viscosity and suspend particles in liquid detergent formulations.
• Textile Printing: Acts as a thickener in pigment printing pastes to achieve sharp print definition.

Basic Information

Product Name	Carboxymethyl Hydroxyethylcellulose
CAS No.	9004-30-2
Molecular Formula	(C6H7O2(OH)x(OCH2CH2OH)y(OCH2COONa)z)n
Molecular Weight	Variable polymer (typically 90,000 - 700,000 g/mol)
Synonyms	CMHEC; Carboxymethyl 2-Hydroxyethyl Cellulose; Cellulose, 2-hydroxyethyl methyl ether, carboxymethyl ether; Sodium Carboxymethyl Hydroxyethyl Cellulose; Hydroxyethyl Methyl Cellulose Carboxymethyl Ether; Glycol Cellulose, Carboxymethyl Ether; Tylose® C Grades; Walocel™ CRT Grades
EINECS	Contact for details

Quality Control

Our Carboxymethyl Hydroxyethylcellulose is manufactured under a strict quality management system. Each batch undergoes rigorous testing to ensure it meets precise specifications for viscosity, degree of substitution, purity, and moisture content. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing key parameters to support your quality assurance protocols. Specifications can be tailored to meet various industrial and regulatory standards.

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); the container must be kept tightly sealed after initial use to prevent caking and degradation due to moisture absorption.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (IR)	Conforms
Viscosity (2% aq. solution)	100 - 20,000 mPa·s (customizable)
Degree of Substitution (CM)	0.2 - 0.8
Molar Substitution (HE)	0.5 - 2.5
Moisture Content	≤ 10.0%
pH (1% solution)	6.0 - 8.5
Purity (on dry basis)	≥ 98.0%
Ash Content	≤ 10.0%
Particle Size (through 80 mesh)	≥ 95%

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