Description

4-Hydroxybutyl Methacrylate is a bifunctional monomer featuring both a polymerizable methacrylate group and a terminal hydroxyl group. This unique structure makes it a versatile building block for introducing cross-linking sites and hydrophilic character into polymer chains. It is essential for formulators and polymer chemists in industries requiring materials with tailored adhesion, flexibility, and reactivity. The compound is supplied with the highest purity standards to ensure consistent performance in demanding applications.

Application

• UV-Curable Coatings & Inks: A key reactive diluent and cross-linker in formulations for wood, plastic, and metal coatings, enhancing cure speed and final film properties.
• Hydrogel & Contact Lens Materials: Used in the synthesis of hydrophilic polymers for soft contact lenses, wound dressings, and other biomedical hydrogels due to its biocompatibility and water-absorbing capability.
• Adhesives & Sealants: Imparts improved adhesion to various substrates and flexibility in acrylic-based pressure-sensitive adhesives (PSAs) and structural adhesives.
• Dental Composites & Resins: Serves as a co-monomer to reduce polymerization shrinkage and improve the mechanical strength and durability of dental restorative materials.
• Fiber Optic Coatings: Employed in coatings that protect optical fibers, providing essential flexibility, adhesion, and environmental resistance.
• Modifier for Acrylic Resins: Incorporated into acrylic copolymers to introduce pendant hydroxyl groups for subsequent reactions, improving compatibility, dyeability, or providing sites for further chemical modification.

Basic Information

Product Name	4-Hydroxybutyl Methacrylate
CAS No.	997-46-6
Molecular Formula	C8H14O3
Molecular Weight	158.20 g/mol
Synonyms	4-Hydroxybutyl methacrylate; 4-HBMA; 2-Methyl-2-propenoic acid 4-hydroxybutyl ester; HEMA butyl ether; Tetramethylene glycol monomethacrylate; 4-Hydroxy-n-butyl methacrylate; 1,4-Butanediol monomethacrylate; Methacrylic acid 4-hydroxybutyl ester
EINECS	213-637-0

Quality Control

Every batch of 4-Hydroxybutyl Methacrylate is manufactured and tested under a strict quality management system. We ensure compliance with relevant industry standards and provide comprehensive Certificates of Analysis (COA) for each shipment, detailing purity, identity, and impurity profiles. Our quality commitment supports applications in sensitive sectors like medical devices and advanced electronics.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Keep away from heat, sparks, and open flame. For long-term storage, consider under an inert atmosphere to minimize potential polymerization.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0 %
Water Content (KF)	≤ 0.5 %
Acidity (as Methacrylic Acid)	≤ 0.5 %
Color (APHA)	≤ 50
Inhibitor (MEHQ)	50 - 250 ppm

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