Methyl methacrylate

Methyl methacrylate (MMA) is a colorless, volatile liquid with a pungent odor. As one of the most widely used monomers in the acrylate family, it exhibits high chemical reactivity at room temperature and is extremely prone to polymerization. The core value of MMA lies in its exceptional polymerizability; it is primarily utilized in the production of PMMA (organic glass), coatings and adhesives, plastic modifiers, as well as medical and fine chemicals.

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Product Introduction

Zouping Jinxing Chemical Co., Ltd. is one of the leading manufacturers and suppliers of Methyl methacrylate in China. If you're going to wholesale bulk Methyl methacrylate made in China, welcome to get free sample from our factory. All customized products are with high quality and low price.

Physicochemical properties

Boiling point: 100.3℃, Melting point: −48℃, Density: 0.944 g/cm³ (20℃)
Solubility: Methyl methacrylate is sparingly soluble in water (~1.6 g/100 mL at 20°C) and is miscible with ethanol, diethyl ether, acetone, benzene, and chloroform.
Flash point: 10℃ (closed cup), extremely flammable, explosion limits: 2.1%–12.5% (by volume)
Self-polymerization tendency: Contains conjugated double bonds + electron-withdrawing ester groups, high free radical polymerization activity; intense self-polymerization and exothermic reaction occur upon heating, exposure to light, peroxides, or depletion of trace amounts of polymerization inhibitors, therefore MEHQ (p-methoxyphenol, 50–100 ppm) or TBC must be added to the product
Chemical behavior: Typical vinyl monomer-free radical/anionic/group transfer polymerization to obtain PMMA; can copolymerize (with styrene, acrylates, vinyl chloride); double bonds can be hydrogenated and halogenated; ester groups can be hydrolyzed back to methacrylic acid

Core Uses

Polymethyl methacrylate (PMMA)
PMMA (acrylic, plexiglass) is obtained through homopolymerization or copolymerization of Methyl methacrylate, with a light transmittance of 92% (higher than glass). Applications include:
Skylights, advertising light boxes, display racks
Automotive taillights, instrument panels, HUD light guide plates
Optical lenses, fiber optic cladding, dental trays/bone cement
Under-screen light guide films for mobile phones, LCD backlight modules
Copolymer Modifiers
Copolymerization with styrene: Improves the weather resistance, transparency, and surface hardness of PS (MS resin)
Copolymerization with ABS: Obtains transparent ABS (MABS)
Copolymerization with acrylates: Topical coatings, emulsion adhesives, textile finishing agents
Others
Dental self-curing resin (MMA + PMMA powder + BPO)
Anaerobic adhesives, acrylate structural adhesive monomers
Leather/paper treatment agents, lubricant additives (small amount)

Safety and Storage

Toxicity: Methyl methacrylate is moderately toxic; oral LD₅₀ in rats ≈ 8400 mg/kg (low acute toxicity), but vapor irritates eyes, nose, and throat, causing headache and nausea; skin contact causes defatting dermatitis; not listed as carcinogenic by IARC, but its metabolite methacrylic acid is corrosive.

GHS: Flammable liquid (Cat 2), Acute toxicity (Cat 4), Eye irritation (Cat 2A)

Self-polymerization risk: Storage and transportation must be temperature controlled ≤30℃, protected from light, nitrogen-sealed, and use qualified polymerization inhibitors; large-scale storage requires cooling coils; peroxide contamination is strictly prohibited.

Fire extinguishing: Alcohol-resistant foam, dry powder, CO₂, water mist; direct water flow is prohibited (to prevent spillage and exothermic boiling due to self-polymerization).

Protection: Respirator (high concentration), nitrile gloves, goggles; contain leaks with sand/non-flammable absorbent; wastewater should be disposed of as organic hazardous waste, and must not be discharged into sewers (self-polymerization can clog pipes).