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Product Description
Methacrylic Acid, commonly abbreviated as MAA, is a versatile organic compound serving as a foundational building block in the production of advanced acrylic polymers and resins. With its chemical formula C₄H₆O₂ and CAS number 79-41-4, this colorless, viscous liquid offers exceptional reactivity and stability, making it indispensable for industries requiring durable, transparent, and weather-resistant materials. Known for its acrid odor and corrosive nature, high-purity Methacrylic Acid ensures reliable performance in polymerization processes, delivering products with superior mechanical strength and optical clarity.
Whether you're formulating coatings, adhesives, or specialty plastics, Methacrylic Acid provides the precision and consistency needed for innovative applications. Sourced from rigorous manufacturing standards, our Methacrylic Acid meets global quality benchmarks for purity and inhibitor levels to prevent premature polymerization.
Methacrylic Acid is characterized by its balanced physical and chemical attributes, enabling seamless integration into diverse formulations. Below is a detailed overview of its specifications:
| Property | Value/Description | Notes/Standards |
|---|---|---|
| Chemical Formula | C₄H₆O₂ | - |
| CAS Number | 79-41-4 | - |
| Molecular Weight | 86.09 g/mol | - |
| Appearance | Clear, colorless liquid | Inhibited with MEHQ |
| Purity | ≥99.0% | Glacial grade |
| Density | 1.015 g/cm³ at 20°C | - |
| Melting Point | 14–16°C | Freezing point: ~15°C |
| Boiling Point | 160–163°C at 760 mmHg | - |
| Flash Point | 67–77°C (closed cup) | Combustible; handle with care |
| Vapor Pressure | 0.89 mbar at 20°C | Increases with temperature |
| Water Content | ≤0.05% | Hygroscopic; store dry |
| Color (APHA) | ≤30 | Low color for optical apps |
| Acid Value | ≥99.9% | As methacrylic acid |
| Solubility | Miscible in water above 16°C; soluble in most organic solvents | - |
These properties make Methacrylic Acid highly suitable for controlled reactions, with low volatility and excellent thermal stability up to its boiling point.
Methacrylic Acid's unique double-bond structure facilitates efficient copolymerization, unlocking a wide range of industrial uses:
Polymer Production: Primary monomer for poly(methyl methacrylate) (PMMA), yielding shatter-resistant sheets and molded parts used in automotive glazing, signage, and medical devices.
Coatings and Paints: Enhances adhesion, UV resistance, and gloss in architectural and automotive finishes.
Adhesives and Sealants: Provides strong bonding in structural adhesives for construction and electronics.
Textiles and Leather: Improves water repellency and durability in finishing agents.
Ion-Exchange Resins: Forms functional groups for water purification and chemical processing.
Specialty Chemicals: Base for thickeners, dispersants, and personal care formulations.
By leveraging Methacrylic Acid, manufacturers achieve cost-effective scalability while meeting stringent performance requirements in demanding environments.
Opting for premium-grade Methacrylic Acid translates to tangible advantages in production and end-product quality:
Superior Polymerization Control: Stabilized formulation minimizes unwanted reactions, ensuring high yields and consistent molecular weight distribution.
Enhanced Durability: Resulting materials exhibit outstanding weatherability, chemical resistance, and impact strength for long-term reliability.
Versatile Compatibility: Easily blends with other monomers like acrylic acid or styrene for tailored properties.
Eco-Friendly Profile: Low VOC emissions during processing support sustainable manufacturing practices.
Cost Efficiency: High purity reduces waste and downstream purification needs, optimizing operational expenses.
Methacrylic Acid is primarily used as a monomer in the synthesis of acrylic polymers, such as PMMA for optics and Plexiglas, as well as in coatings, adhesives, and resins for enhanced durability and clarity.
Yes, Methacrylic Acid is corrosive to metals and tissues due to its carboxylic acid nature. Always use appropriate PPE, including gloves and eye protection, and store in compatible containers like stainless steel or HDPE.
Methacrylic Acid features a methyl group on the alpha carbon (CH₂=C(CH₃)COOH), providing greater rigidity and thermal stability in polymers compared to Acrylic Acid (CH₂=CHCOOH), which yields more flexible materials.
Store in a cool, dry, well-ventilated area below 30°C, away from light, heat, and strong bases. It is hygroscopic and light-sensitive, so use opaque containers and maintain inhibitor levels to prevent polymerization.
Commercial grades typically offer ≥99% purity, with glacial variants exceeding 99.5%. Inhibitor content (e.g., 250 ppm MEHQ) ensures stability during transport and storage.
Methacrylic Acid is flammable (flash point ~70°C) and has an acrid odor detectable at low ppm. Follow SDS guidelines for ventilation, spill containment, and neutralization with soda ash. It is not classified as highly toxic but can cause skin irritation.
For inquiries, bulk pricing, or technical support on Methacrylic Acid, reach out to our dedicated team:
Email: lisa@qidi.com
WhatsApp: +86-186 5121 5887
We're here to assist with your chemical needs—let's discuss how Methacrylic Acid can elevate your projects!
