Description

2-Propenoic Acid, 2-Hydroxy-, Propyl Ester (9Ci) CAS NO 91147-99-8 is a specialized acrylate ester monomer, also known as hydroxypropyl acrylate. This compound is valued for its bifunctional nature, featuring both a polymerizable acrylate group and a reactive hydroxyl group, which enables it to act as a crosslinking agent and property modifier in polymer synthesis. It is essential for formulators and manufacturers in the coatings, adhesives, and specialty polymer industries seeking to enhance product durability, adhesion, and chemical resistance.

Application

• UV-Curable Coatings and Inks: A key reactive diluent and crosslinker in formulations for wood, plastic, and metal coatings, providing excellent cure speed and film properties.
• Adhesives and Sealants: Used to synthesize acrylic copolymers that improve tack, peel strength, and environmental resistance in pressure-sensitive and structural adhesives.
• Acrylic Resin Modification: Incorporated into acrylic and polyurethane resins to introduce hydroxyl functionality for subsequent crosslinking with isocyanates or melamines.
• Textile and Leather Finishes: Serves as a co-monomer in binders and finishing agents to impart water repellency, softness, and durability.
• Photopolymer and Photoresist Materials: Utilized in the production of light-sensitive polymers for printing plates and electronic materials.
• Hydrogel Synthesis: Acts as a co-monomer in the creation of hydrophilic polymers for medical and personal care applications.

Basic Information

Product Name	2-Propenoic Acid, 2-Hydroxy-, Propyl Ester (9Ci)
CAS No.	91147-99-8
Molecular Formula	C6H10O3
Molecular Weight	130.14 g/mol
Synonyms	Hydroxypropyl acrylate; 2-Hydroxypropyl acrylate; 1,2-Propanediol monoacrylate; Propylene glycol monoacrylate; Acrylic acid 2-hydroxypropyl ester; 2-Hydroxypropyl ester of acrylic acid; HPA; β-Hydroxypropyl acrylate
EINECS	Contact for details

Quality Control

Our production of Hydroxypropyl Acrylate adheres to stringent quality management protocols. Every batch is analyzed using advanced techniques like Gas Chromatography (GC) and High-Performance Liquid Chromatography (HPLC) to ensure high purity and consistent performance. Comprehensive Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are provided to guarantee traceability and compliance with your technical 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 product is light-sensitive (store away from light) and may contain polymerization inhibitors; prolonged storage at elevated temperatures should be avoided. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Color (APHA)	≤ 50
Acidity (as acrylic acid)	≤ 0.5%
Inhibitor (MEHQ)	100 - 300 ppm

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