Methlacrylic Acid
MAA, 2-Methylpropenoic acid, 2-Methylacrylic acid.
- CAS
- 79-41-4
- EC
- 201-204-4
- Sectors
- Plastics & Polymers, Coatings, Adhesives, Sealants & Elastomers
Methlacrylic Acid (CAS 79-41-4) is a Technical Grade unsaturated monocarboxylic acid in the form of a clear, colorless liquid with an unpleasant odor, inhibited with MEHQ to prevent spontaneous polymerization during transport and used as a monomer for methacrylate esters, specialty resins, adhesives, coatings, ion-exchange resins and dental materials. It is a colorless, viscous liquid with a pungent, acrid odor and high chemical reactivity. It enhances the adhesion, hardness, and weatherability of final polymer products. It is a fundamental process chemical for the manufacturing of plexiglass, ion-exchange resins, and dental materials.
Typical Properties
| Molecular formula | C4H6O2 |
|---|---|
| Molecular weight | 86.09 g/mol |
| Appearance | colourless liquid or crystals with an unpleasant odour. |
| Form | Liquid |
| Color | Clear |
| Odor | Repulsive |
| Melting point | 16 °C |
| Boiling point | 163 °C @ Press: 760 Torr |
| Density | 1.0153 g/cm³ @ Temp: 20 °C |
| Water solubility | 9.7 g/100 mL (20 °C) |
| Flash point | 170 °F |
| pH | 2.0-2.2 (100g/l, H2O, 20°C) |
| GHS signal word | Danger · Corrosive, Acute toxicity, Irritant / harmful, Health hazard |
| HS code | 29161300 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Methlacrylic Acid
Applications
- Acrylic Resins: Primary monomer for the production of paints, varnishes, and high-gloss textile finishes.
- Adhesive Formulations: Used in the synthesis of anaerobic and cyanoacrylate adhesives for structural bonding.
- Water Treatment Polymers: Precursor for poly-methacrylic acid used as a dispersant and scale inhibitor.
Safety & Risks
Classified as Corrosive (Category 1A) and Acute Toxic (Category 3). Causes severe skin burns. Handle with Self-Contained Breathing Apparatus, Chemical Suits, and Butyl Gloves.
Packaging
200 kg Plastic Drums, 1000 kg IBC Tanks, or ISO Tanks.