Mainly used in paints, adhesives, and leather treatment agents, methacrylic acid is also used as a raw material in the manufacture of ion-exchange resins.




Chemical name Methacrylic Acid
Chemical formula

Quality Standards and Reference Values

  Standard Reference value
Number of colors (APHA) 30 or less 5 or less
Specific gravity (20°C/4°C) 1.012 to 1.018 1.015
Monomer (GC method) % 98.5 or more 99.9
Moisture content (KF method) % 0.3 or less 0.01
Polymerization inhibitor ppm MEHQ250

General Properties

Molecular weight 86.09
Refractive index (nD20) 1.432
Viscosity (20°C) mPa,s 1.35
Solidification point °C 15
Specific heat J/(g,°C) 2.10
Polymerization heat kJ/mol 66.2
Boiling point/Vapor pressure °C/hPa 161/1013
Solubility (20°C) Percentage into water monomers
Percentage of monomers into water
Flash point °C 73
Toxicity (acute oral LD50) mg/kg in rats 1,060
Polymer Tg °C 228


Dangerous Substance Classification [Fire Service Act] Class 4, Type 3 Petroleum (water-soluble)
Official Chemical Substance Control Number [Chemical Substance Control Law] (2) -1025
CAS No. 79-41-4
EU EINECS No. 201-204-4
Korea ECL No. KE-24906
China IECSC Listed
Taiwan ECN Listed



  • Paint
  • Adhesive
  • Fiber processing agent
  • Rubber modifier
  • Leather treatment
  • Paper processing agent
  • Lubricant additive
  • Cement mixing agent
  • Other

Inquiries Concerning Products

Mitsubishi Chemical Corporation MMA
  • TEL:[+81]3-6748-7504

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