For professionals in the chemical industry, understanding the precise specifications of raw materials is fundamental to successful product development and manufacturing. 2-Hydroxypropyl Methacrylate (HPMA), a widely used monomer, is no exception. With its unique chemical properties, HPMA is a cornerstone in the creation of advanced polymers for coatings, adhesives, textiles, and more. This guide aims to provide key specifications for HPMA and offer essential advice for buyers looking to procure this vital chemical intermediate. As a dedicated supplier, we emphasize the importance of quality and consistency in every batch.

HPMA, identified by CAS number 27813-02-1, is typically supplied as a clear, colorless liquid. The primary quality indicator for HPMA is its assay or purity level, usually specified as a minimum percentage, commonly 97.0% or higher, determined by Gas Chromatography (GC). High assay values ensure that the monomer will perform reliably in polymerization and chemical reactions without interference from impurities. Buyers should always verify the assay percentage provided by their manufacturer.

Key specifications to consider when purchasing HPMA include:

  • Appearance: Clear, colorless liquid. Any deviation may indicate contamination or degradation.
  • Assay (Purity): Typically ≥97.0% by GC. Higher purity is often preferred for specialized applications.
  • Free Acid: Usually specified as a maximum percentage, commonly ≤0.1% or ≤0.2%. Low free acid content is critical to prevent unwanted side reactions and ensure stability.
  • Water Content: Typically ≤0.1% or ≤0.15%. Water can affect polymerization kinetics and should be minimized.
  • Color: Often specified on a scale (e.g., APHA or Hazen scale), with a maximum limit such as 20 or 30. Low color indicates product purity and minimal degradation.
  • Inhibitor Content: HPMA is often stabilized with inhibitors like MEHQ (Monomethyl Ether Hydroquinone) to prevent premature polymerization during storage and transport. The typical range is 180-220 ppm, but this can vary. Understanding the type and concentration of inhibitor is important for process design.

When you are ready to buy HPMA, it is crucial to select a supplier that can consistently meet these specifications. A reliable manufacturer will offer detailed product documentation, including Technical Data Sheets (TDS) and Safety Data Sheets (SDS), providing comprehensive information on properties, handling, and safety. Proximity of the supplier, production capacity, and their commitment to quality control are also significant factors.

As a trusted supplier, we offer HPMA that meets rigorous industry standards. We understand that your manufacturing processes depend on the quality of the raw materials you use. By providing high-purity HPMA with detailed specifications and reliable supply, we aim to be your preferred partner for all your chemical intermediate needs. Investing in quality HPMA is an investment in the success and reliability of your final products.