What Is Methacrylic Acid (MMA)? Hazard Classification, Uses, And Storage Guidelines

What is Methacrylic Acid (MAA)?

Methacrylic acid is an important chemical with the molecular formula C₄H₆O₂. It appears as a colorless, transparent liquid with a strong, pungent odor. Possessing multiple functional groups such as carboxyl groups and double bonds, methacrylic acid exhibits complex properties and reactivity in chemical reactions. It finds extensive applications in polymers, coatings, pharmaceuticals, food, and other fields.

Physical and Chemical Properties Of Methacrylic Acid (MAA)

Methacrylic Acid (MAA) has the molecular formula C₄H₆O₂ and a molecular weight of 86.09 g/mol. At room temperature, it exists as a colorless, transparent liquid with a strong, pungent odor. Its boiling point is 161°C, melting point is 15°C, and density is 1.015 g/cm³. Methacrylic Acid (MAA) exhibits strong acidity with a pKa value of approximately 4.66. It is readily soluble in water, ethanol, and organic solvents such as diethyl ether. Chemically reactive, it readily undergoes addition polymerization reactions and serves as a crucial monomer for preparing various polymeric materials.

Hazard Classification Of Methacrylic Acid (MAA)

Methacrylic acid is classified as a Category 3 hazardous material, specifically a flammable liquid. When handling methacrylic acid, relevant safety regulations must be followed, including avoiding fire hazards caused by ignition sources, static electricity, and other potential risks.

Functions of Methacrylic Acid (MAA)

• Methacrylic Acid (MAA) is a vital organic chemical raw material widely used in various industrial productions. Its primary function lies in serving as a monomer or copolymerizable monomer for manufacturing diverse polymers.
• Polymers and copolymers of methacrylic acid are extensively utilized in products such as coatings, adhesives, paints, and sealants.
• It also finds applications in pharmaceuticals, textiles, and cosmetics.
• In the pharmaceutical industry, methacrylic acid and its derivatives are used to prepare drug carriers and drug delivery systems;
• in textiles, it serves as a fabric treatment agent; and in cosmetics, it functions as a thickener and film-forming agent.

Methacrylic Acid (MAA) Uses

Coatings and Resins:
Methacrylic Acid (MAA) and its esters (such as methyl methacrylate and butyl methacrylate) are key monomers for producing acrylic resins. Acrylic resins offer excellent transparency, weather resistance, and adhesion, making them widely used in coatings, adhesives, and fibers. In particular, methacrylic acid–based resins are favored in automotive and architectural coatings due to their superior abrasion resistance and UV stability.

Pharmaceuticals and Biomedical Materials:
In the pharmaceutical field, methacrylic acid (MAA) is used to synthesize intermediates for antibiotics, anticancer drugs, and other fine chemicals. Methacrylic acid and its polymers also play an important role in biomedical materials, such as contact lenses, dental materials, and medical adhesives. These products require high purity and good biocompatibility-properties that methacrylic acid can provide.

Water Treatment Agents:
Methacrylic Acid (MAA) and its derivatives can be used as water treatment agents, especially as flocculants and coagulant aids in wastewater treatment and drinking water purification. By binding with suspended solids and contaminants in water, they help form large precipitating particles, enabling efficient water purification.

Other Applications:
Methacrylic Acid (MAA) is also used in the production of paper coatings, textile finishing agents, leather treatment chemicals, and battery electrolytes. In these fields, methacrylic acid imparts excellent physical and chemical properties such as abrasion resistance, flexibility, and corrosion resistance.

What are the storage conditions for Methacrylic Acid (MMA)?

Storage Conditions: Methacrylic Acid (MMA) should be stored in sealed, corrosion-resistant containers. Commonly used container materials include stainless steel, glass, and certain corrosion-resistant plastics. Containers must be clearly labeled with hazardous material warnings, indicating their chemical properties and handling precautions.

Why Purchase Methacrylic Acid (MAA) From Gneebio?

Gneebio is a trusted manufacturer and supplier with over a decade of experience in the chemical industry. Our Methacrylic Acid (MAA) is produced under strict ISO and GMP quality systems, ensuring high purity concentration in industrial applications. We offer:

• Product specifications (technical data sheet);
• COA and MSDS;

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