Methyl methacrylate is a colorless acrylic ester monomer used as a reactive raw material for the manufacture of polymethyl methacrylate, acrylic resins, and related polymer systems. Also referred to in industrial documentation as methacrylic acid methyl ester and MMA, this material is identified by CAS 80-62-6 and is commonly used in resin production, coating binder manufacture, and other polymer processing applications. This product is generally supplied with competitive factory pricing, customized specifications, supporting documents including MSDS, TDS, COA, and bulk supply options.
Methyl Methacrylate CAS 80-62-6
- CAS: 80-62-6
- Synonyms: Methyl Methacrylate; MMA; Methacrylic Acid Methyl Ester; Methyl 2-Methylpropenoate; 2-Propenoic acid, 2-methyl-, methyl ester
- Einecs: 201-297-1
- Molecular Formula: C5H8O2
- Grade: Industrial grade / stabilized monomer grade
- Package: 190 kg drum / tank container
Product Description
Physicochemical Properties
| Item | Typical Value / Description |
|---|---|
| Appearance | Clear, colorless liquid |
| Assay | Commonly ≥99.0% by GC; exact release limit depends on producer spec |
| Molecular Weight | 100.12 |
| Melting Point | about -48 °C |
| Boiling Point | about 100–100.5 °C |
| Relative Density | about 0.93–0.94 |
| Water Solubility | Slightly soluble; about 1.6 g/100 mL at 20 °C |
| Vapor Pressure | about 3.9 kPa at 20 °C |
| Flash Point | about 8–10 °C |
| Refractive Index | about 1.413–1.415 |
| Flammability Limits in Air | about 1.7–12.5 vol% |
| Stabilization | Typically supplied as stabilized monomer |
Applications
- Production of PMMA and related acrylic molding or casting resin systems
- Reactive monomer for solution, suspension, and emulsion polymerization
- Manufacture of acrylic coating resins and binder systems
- Copolymer feedstock for pressure-sensitive adhesive and specialty polymer formulations
- Intermediate for transparent rigid polymer and methacrylate copolymer production
Storage & Safety
Store methyl methacrylate only in its stabilized form in a cool, dark, and well-ventilated area. Keep the container tightly closed and away from heat, sparks, open flames, strong oxidants, strong acids, and strong bases. Because the vapor is flammable and can form explosive mixtures with air, grounded equipment and non-sparking tools are appropriate for transfer and handling. Recommended PPE typically includes chemical splash goggles, chemical-resistant gloves, suitable protective clothing, and local exhaust ventilation where vapor exposure may occur. Hazardous polymerization can occur if inhibitor levels are not maintained. MMA is shipped as UN1247, METHYL METHACRYLATE MONOMER, STABILIZED, Class 3, Packing Group II.
Quality Assurance
For this product class, a credible factory QC statement should focus on industrial monomer control rather than pharmaceutical-style claims. A sound release program for methyl methacrylate usually covers GC assay, appearance, density or refractive index, moisture, acidity, and inhibitor content, with identity confirmation supported by IR or GC profile matching; NMR may be used for structural confirmation or investigation work, but it is not typically the primary routine release test for every bulk batch. For bulk MMA, it is safer and more realistic to describe plant controls in terms of batch traceability, retained samples, and documented lot release than to claim GMP unless the producer can prove that standard for the specific site. The cited supplier specifications support routine controls such as GC assay, density, boiling point, and refractive index.
FAQ - Technical & Supply Chain
-
Q:
How can buyers verify that methyl methacrylate is the same substance identified by CAS 80-62-6?
A: The usual identity check is to match the standard product name Methyl Methacrylate with CAS 80-62-6, EC 201-297-1, and the molecular formula C5H8O2 on the TDS, COA, and shipping documents. For technical review, buyers may also compare the typical boiling point, density, and refractive index range against the supplier specification. -
Q:
Why is stabilized MMA commonly required in storage and transport documents?
A: Because methyl methacrylate can undergo hazardous polymerization if storage conditions are poor or inhibitor protection is lost. That is why transport and SDS records commonly specify the material as methyl methacrylate monomer, stabilized, with controls on heat, light, ignition sources, and inhibitor maintenance.
Documents and Product Support
For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.
- COA for batch-based quality reference
- TDS for key physical and chemical information
- SDS / MSDS for handling, storage, and safety reference
- Packing information for sample, trial, and bulk orders
- Technical communication based on application and specification requirements
Information to Confirm Before Quotation
Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.
- Product name and CAS number
- Application or intended end use
- Required purity, grade, or specification
- Sample quantity, trial order, or bulk demand
- Preferred packing form or net weight
- Destination country or port
- Required documents or compliance expectations
Packaging, Storage, and Handling Notes
Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.
Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.
Sample, Bulk Order and Repeat Supply Support
Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.
For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.




