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Methanesulfonic Acid (MSA)

Methanesulfonic Acid is a strong organic acid which is highly suitable for manufacturing active pharmaceutical ingredients such as Telmisartan and Eprosartan, Angiotensin II receptor antagonists.

What are the advantages of Methanesulfonic Acid (MSA)?


  • Strong, odor-free organic acid
  • Non-oxidizing
  • Virtually free of metal ions and sulfate
  • Our unique manufacturing process makes the product free of chlorine and colorless.
  • Easy to handle in liquid form
  • Strong acid prevents the formation of oxidation products.
  • Reactions at higher temperatures possible
  • The excellent solubility in water enables easy phase separations.
  • Decomposes to form sulfate, carbon dioxide, water and biomass

CAS No.: 75-75-2