Description

Hydroxybutyl Methylcellulose is a non-ionic, water-soluble cellulose ether derivative, chemically modified to exhibit unique rheological and film-forming properties. This versatile polymer is engineered to provide superior thickening, water retention, and stabilization in complex formulations. It is a critical additive for industries requiring precise control over viscosity, adhesion, and moisture management, such as pharmaceuticals, construction materials, and personal care products.

Application

• Pharmaceuticals: As a binder, controlled-release matrix former, and viscosity-enhancing agent in tablet coatings, ophthalmic solutions, and topical gels.
• Construction & Building Materials: Key component in cement-based tile adhesives, grouts, and self-leveling compounds for improved water retention, workability, and open time.
• Personal Care & Cosmetics: Used in hair gels, creams, and lotions as a thickener, film-former, and stabilizer to enhance texture and product performance.
• Paints & Coatings: Acts as a rheology modifier and thickener in water-based paints to prevent sagging and improve application properties.
• Ceramics: Employed as a binder and plasticizer in ceramic bodies and glazes to improve green strength and shaping.
• Adhesives & Sealants: Provides viscosity control and enhances the bonding characteristics of various adhesive formulations.

Basic Information

Product Name	Hydroxybutyl Methylcellulose
CAS No.	9041-56-9
Molecular Formula	(C6H7O2(OH)x(OCH3)y(OCH2CH2CH2CH2OH)z)n
Molecular Weight	Variable (Polymer)
Synonyms	Hydroxybutyl Methyl Cellulose; HBMC; Cellulose, 2-hydroxybutyl methyl ether; Methylhydroxybutylcellulose; Hydroxybutylmethyl Cellulose Ether; HPMC Derivative (Hydroxybutyl); (2-Hydroxybutyl)methylcellulose
EINECS	Contact for details

Quality Control

Our Hydroxybutyl Methylcellulose is manufactured under a strict quality management system. Each batch is tested against rigorous in-house specifications to ensure consistent performance, including parameters for viscosity, methoxy and hydroxybutoxy substitution, moisture content, and purity. Certificates of Analysis (COA) are provided with every shipment to guarantee traceability and compliance with your formulation requirements.

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 opening to prevent caking or degradation due to moisture absorption.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (IR)	Conforms
Viscosity (2% aqueous solution)	As per grade (e.g., 100 - 100,000 mPa·s)
Methoxy Content	Contact for details
Hydroxybutoxy Content	Contact for details
Moisture Content	≤ 5.0%
pH (1% solution)	5.0 - 8.0
Ash Content	≤ 1.5%

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