Reaxis®  E140P

REAXIS® E140P, Potassium Stannate, is an exceptionally pure grade of potassium stannate that is approved for use in applications where the tightest specifications must be met, such as in formulations for Hydrogen Peroxide stabilization. It is manufactured by a proprietary direct process which yields the purest product available anywhere. REAXIS® E140P also finds use in esterifications, in addition to applications as a complexing agent.

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Technical Information

  • Chemical Name Potassium Stannate, Peroxide Grade

Typical Specifications

Parameter Range
Tin Content (%) 38.0 Min
Free KOH (%) 1.2 Max
Moisture (%) 2.0 Max
Insolubles (%) 0.02 Max
Iron (%) 0.0020 Max
Nickel (%) 0.0020 Max
Copper (%) 0.0020 Max
Chromium (%) 0.0020 Max
Sulfate (%) 0.010 Max
Heavy Metals (as Lead) (%) 0.010 Max
Chloride (%) 0.015 Max

Package & Storage


  • Fiber drum, 50 lbs./22.5kg.
  • Fiber drum, 100 lbs./50kg.
  • Plastic pail, 55 lbs./25kg.


Potassium Stannate should be stored in the original packaging. The container should be closed tightly after each use to maximize shelf life.

Safety and Handling

Before use of Reaxis products please refer to the relevant Safety Data Sheet (SDS) for safety and toxicological data as well as for the information on proper transportation, storage, and use. SDSs are available by request via our web site, contacting your local representative, or emailing direct to

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This information is provided to the best of our knowledge but without obligation. Reaxis is not liable for any incorrect or missing information. This data sheet becomes invalid upon publication of a new version. Please contact us for the latest version.

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