Reaxis®  E140

REAXIS® E140, Potassium Stannate, is a fast dissolving alkaline stannous tin manufactured by a proprietary direct process that yields consistently high purity product. Potassium Stannate is used in Surface Finishing applications as a  tin replenisher in alkaline tin and tin alloy plating baths. Potassium Stannate also used in the stabilization of hydrogen peroxide, in addition to applications as a complexing agent.

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Technical Information

  • Chemical Name Potassium Stannate

Typical Specifications

Parameter Range
Tin Content (%) 38.0 Min
Free KOH (%) 1.2 Max
Moisture (%) 2.5 Max
Insolubles (%) 0.1 Max

Package & Storage


  • 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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