2-Hydroxyethyl Methacrylate (HEMA), identified by its CAS number 868-77-9, is a vital organic compound widely employed across numerous industrial sectors. Its chemical structure, C6H10O3, provides a unique combination of a polymerizable methacrylate group and a reactive hydroxyl group, making it exceptionally versatile for synthesis and material modification.

HEMA typically presents as a colorless, transparent liquid. Its physical properties, such as a boiling point of approximately 213 °C and a density around 1.07 g/cm³, are critical for its handling and processing in industrial settings. The compound is miscible with water and many organic solvents, facilitating its incorporation into various formulations. For industrial procurement, understanding key specifications like purity (typically ≥98%), residual acid content, water content, and inhibitor levels (like MEHQ) is essential to ensure optimal performance in the intended application.

The synthesis of HEMA commonly involves the reaction of methacrylic acid with ethylene oxide or the esterification of methacrylic acid with ethylene glycol. These processes often yield HEMA along with by-products like ethylene glycol dimethacrylate. Reputable manufacturers ensure high purity and quality control during production, which is critical for sensitive applications in coatings, adhesives, and medical polymers. When sourcing HEMA, inquiring about the manufacturer's quality standards and certifications is a wise procurement practice.

Safe handling and storage of HEMA are paramount due to its tendency to polymerize, especially when exposed to heat, light, or contaminants. It is typically stored in cool, well-ventilated areas, away from ignition sources, and often contains inhibitors to prevent premature polymerization. Protective measures, including gloves, safety goggles, and adequate ventilation, are recommended during handling to avoid skin and eye irritation. For bulk purchases, understanding the supplier's recommended storage and handling guidelines is crucial. Companies seeking to buy HEMA can often access detailed safety data sheets (SDS) from their suppliers, providing comprehensive information on hazards, storage, and emergency procedures.

In essence, HEMA's unique chemical properties, coupled with proper understanding of its synthesis and safe handling practices, make it an invaluable monomer for a wide range of industrial applications. Reliable sourcing from experienced manufacturers ensures the consistent quality and performance required for successful product development.