NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing detailed information about the chemicals we supply, ensuring our clients have a deep understanding of their properties and applications. Today, we focus on 2-Hydroxyethyl Methacrylate (HEMA), a monomer whose chemistry is central to its widespread industrial utility.

At its core, HEMA is an ester of methacrylic acid and ethylene glycol. Its chemical identity is firmly established by its CAS Number: 868-77-9, and its molecular formula is C₆H₁₀O₃. Physically, HEMA presents as a clear, colorless liquid. This form is advantageous for handling and formulation in many industrial processes, including the production of inks, coatings, and adhesives. Its relatively low volatility compared to some other monomers also contributes to safer handling and processing environments.

The dual functionality of HEMA is key to its versatility. The methacrylate group is a vinyl functional group, meaning it contains a carbon-carbon double bond adjacent to a carbonyl group. This structure is highly reactive towards free radical polymerization, making HEMA an excellent monomer for addition polymerization reactions. The second key functional group is the primary hydroxyl (-OH) group, located at the end of the ethyl chain. This hydroxyl group imparts hydrophilicity and provides a site for further chemical reactions, such as esterification, etherification, or participation in polyurethane chemistry.

Industrially, HEMA can be synthesized through several methods. One common route involves the transesterification of methyl methacrylate (MMA) with ethylene glycol. In this process, methyl methacrylate reacts with ethylene glycol, typically in the presence of a catalyst, to yield HEMA and methanol as a byproduct. Another significant method is the reaction of methacrylic acid with ethylene oxide. This addition reaction directly forms the hydroxyethyl ester. The choice of synthesis route often depends on the availability and cost of raw materials, as well as the desired purity and specific process requirements. Ensuring consistent product quality and purity is paramount, which is why NINGBO INNO PHARMCHEM CO.,LTD. emphasizes rigorous quality control throughout its supply chain.

Understanding the 2-hydroxyethyl methacrylate properties is essential for its effective application. Its ability to copolymerize with a vast array of other monomers allows for the creation of polymers with a wide spectrum of properties, including enhanced adhesion, flexibility, impact resistance, and chemical stability. The HEMA chemical's role as both a reactive diluent and a cross-linker is also a direct consequence of its chemical structure and reactivity.

For businesses utilizing HEMA, reliable sourcing and a thorough understanding of its chemical behavior are critical. NINGBO INNO PHARMCHEM CO.,LTD. provides this essential monomer, backed by a commitment to quality and technical support, enabling industries to leverage its unique chemical properties for product innovation and enhancement.

In summary, the chemistry of 2-Hydroxyethyl Methacrylate, characterized by its methacrylate and hydroxyl functionalities, underpins its broad utility. Its well-defined properties and established synthesis routes make it a foundational component for numerous advanced materials.