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E-Pure MSA® (Methane Sulfonic Acid)

Discover the Product range Sulfonyls.
CAS 75-75-2
Product overview

E-Pure® MSA (Methane Sulfonic Acid - CH3SO3H) is a biodegradable acid used in electroplating and electrolyte specially in tin lead deposition; it can be used also for the regeneration of ions exchange resins.

Geographic availability
  • Worldwide

Smart Advantages

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Fewer side reactions
  • Less harmful baths
  • Less agressive to the shop environment & equipment 
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Higher performances
  • More stable & efficient 
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More environmentally friendly
  • Baths produce less wastage & sludge which can be more easily treated
  • Nitrogen & Phosphorous free causes no eutrophication

Chemical name: Methane sulfonic acid
Common name: MSA

Properties & Key benefits of E-Pure MSA® 

Main characterics:                                                                                                                   

  • Strong acid

  • Biodegradable, low COD

  • Non oxidizing and not foaming

  • Compatible with oxidizing agent and biocides           
  • High solvency of organics
  • High metal salts solubility
  • High conductivity
  • Lower sulfate, iron and chloride content 

E-Pure MSA® performances: 




  • Tin/Lead & Tin/Lead alloy plating  
  • Tin plating
  • Immersion and spray stripping of  Ni, Sn, Pb, Sn/Pb, Cd  Cu , Zn 
  • Electropolishing
  • Regeneration of ion exchange resins

A more friendly environmental grade

E-Pure® MSA is replacing most of classical acids used in Sn or Sn/Pb electroplating baths such as Phenol Sulfonic Acid (PSA), Fluoroboric acid (HBF4), Sulfuric acid (H2SO4) and Halides, and frees processes from toxic lead and hazardous fluoborates. With E-Pure MSA®, bath can operate with lower metal content and allows for reduced waste, sludge and fewer residues and effluents. E-Pure® MSA also offers the possibility to recycle electrolytes.

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