Reaxis®  C188

REAXIS® C188, Stannous Oxide, is a versatile high metal content stannous tin that is used in a number of reactions acting as either a catalyst or reducing agent. End-use chemistries and applications include:

  • Esterification Catalyst
  • Surface Finishing (Tin and Tin Alloy Plating)
  • Glass

Stannous Oxide is an excellent catalyst for a wide range of esterification reactions.  Stannous Oxide has the following features:

  • Neutral and non-corrosive
  • Complete conversions with short reaction times due to high catalytic activity
  • Minimal secondary reactions and colored by-products compared to acid catalysts
  • Very useful for oleochemical ester reactions.


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Technical Information

  • Chemical Name Stannous Oxide

Typical Specifications

Parameter Range
Stannous Tin (%) 85.2 Min
Tin (IV) Content (%) 0.7 Max

Package & Storage


  • 55 lb (25 kg) pail


Stannous Oxide 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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