Methacrylic Acid CAS 79-41-4
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Methacrylic Acid CAS 79-41-4,Methacrylic Acid, CAS 79-41-4
79-41-4
C4H6O2
86.09
201-204-4
| CAS | 79-41-4 |
| Molecular formula | C4H6O2 |
| Molecular weight | 86.09 |
| EIENCS | 201-204-4 |
| Form | Liquid |
| Melting point | 12-16 °C (lit.) |
| boling point | 163 °C (lit.) |
| Density | 1.015 g/mL at 25 °C (lit.) |
| Solubility | Chloroform, Methanol (Slightly) |
| PKA | pK1:4.66 (25°C) |
| Color | Clear |
| Storage temp | Store at +15°C to +25°C. |
Methacrylic acid (CAS 79-41-4), as a multifunctional monomer, has core value in its double bond polymerization ability and carboxyl group reactivity, supporting a wide range of demands from high-end optical materials to daily-use adhesives. At present, the acetone cyanoalcohol method is the main method in industry, but the isobutylene oxidation method is gradually being promoted due to its environmental protection advantages. During use, strict precautions must be taken against its corrosiveness and flammability risks. Future technological innovations will focus on green synthesis and high value-added applications (such as biomedical materials).
Synthesis of Polymer materials
Polymethyl methacrylate (PMMA) : Used in plexiglass (car Windows, optical lenses), LED displays, photoresists, etc.
Adhesives and coatings: Enhance weather resistance and flexibility (building sealants, automotive paints).
Hydrogel: Copolymerized with sodium acrylate to produce water-absorbing materials (hygiene products, medical dressings).
Medicine and biomaterials
Drug carrier: As the framework of sustained-release agents, it controls the drug release rate (such as implants).
Medical devices: Synthetic artificial organ materials, antibacterial coatings (oral cleansers).
Industry and Consumer Goods
Synthetic rubber: Improves the elasticity and wear resistance of rubber.
Textile auxiliaries: fabric finishing agents, antistatic agents.
Food packaging: Preservative components (must comply with food safety standards).
Danger
Health risk:
LD₅₀ : 1600 mg/kg (oral in mice); 500 mg/kg (transcutaneous rabbit).
Inhalation irritates the respiratory tract. Contact with skin causes burns (Emergency treatment requires rinsing with plenty of water).
Combustion and explosion: Flammable liquid. Keep away from open flames and high temperatures.
Storage and transportation requirements
Packaging: 200 kg per drum (industrial grade), sealed and protected from light.
Transport Code: UN 2538 (Hazardous Category 8: Corrosive).
Storage: Cool and well-ventilated, with a temperature above 16℃. Prevent solidification and keep away from oxidants.
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