Methyl methacrylate (MMA) has a wide range of uses‌:

‌Main application‌: As a monomer of organic glass (polymethylmethacrylate, PMMA), used to produce transparent plastics‌.
‌Other plastics and coatings‌: Used to manufacture other resins, plastics, and coatings, providing key raw materials for these industries‌.
‌Multiple industrial uses‌: As lubricant, lumber and cork sizing agent, motor coil soaking agent, paper polishing agent, textile printing and dyeing auxiliary, leather treatment agent and insulation filling material, etc., it is widely used in many industrial fields‌ .
‌Fungicide intermediate‌: As an intermediate of the fungicide Sclerotium, it is used in pesticide production‌.
Methyl methacrylate is an important chemical raw material. Its vapor and air can form an explosive mixture. Please pay attention to safety when using it‌4. It not only plays a pivotal role in the plastics and coatings industry, but also plays an important role in many other fields.

Each of these methods has its own characteristics, and appropriate synthetic routes can be selected according to specific needs and conditions‌.

The preparation methods of methyl methacrylate (MMA) mainly include the following:

‌Acetone cyanohydrin method‌: Use acetone as raw material, first react with hydrocyanic acid to generate acetone cyanohydrin, and then heat it with concentrated sulfuric acid and methanol to perform hydrolysis, dehydration and esterification reactions to prepare MMA. This method is a common method for producing MMA. The technology is mature, but the raw material hydrocyanic acid is highly toxic and the three wastes are complex to treat.
‌Isobutylene method‌: Isobutylene is oxidized to methacrolein with air in the presence of a catalyst, then oxidized to methacrylic acid, and finally esterified with methanol to obtain MMA. There is also a one-step oxidation process that directly oxidizes to generate methacrylic acid and then esterifies it.
‌Propylene route‌: The carbonylation reaction of propylene, carbon monoxide and methanol produces 2-methoxyisobutyric acid methyl ester, which is decomposed into MMA and methanol after hydrolysis.

Methyl methacrylate Chemical Properties
Melting point -48 °C (lit.)
Boiling point 100 °C (lit.)
density 0.936 g/mL at 25 °C (lit.)
vapor density 3.5 (vs air)
vapor pressure 29 mm Hg ( 20 °C)
refractive index n20/D 1.414(lit.)
FEMA 4002 | METHYL 2-METHYL-2-PROPENOATE
Fp 50 °F
storage temp. 2-8°C
solubility 15g/l
form Crystalline Powder or Crystals
color White to pale yellow
Odor at 0.10 % in dipropylene glycol. acrylic aromatic fruity
Odor Type acrylate
Odor Threshold 0.21ppm
explosive limit 2.1-12.5%(V)
Water Solubility 15.9 g/L (20 ºC)
Merck 14,5941
JECFA Number 1834
BRN 605459
Henry’s Law Constant 2.46 x 10-4 atm?m3/mol at 20 °C (approximate – calculated from water solubility and vapor pressure)
Exposure limits NIOSH REL: TWA 100 ppm (410 mg/m3), IDLH 1,000 ppm; OSHA PEL: TWA 100 ppm; ACGIH TLV: TWA 100 ppm with intended TWA and STEL values of 50 and 100 ppm, respectively.
Dielectric constant 2.9（20℃）
Stability: Volatile

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