Sreenivasa Industries offers Potassium Stannate with 298.95 Molecular Weight. Sreenivasa Industries has been awarded ISO 9001:2000 certification. Potassium Stannate with 298.95 Molecular Weight appears in white or off-white flowing powder. Potassium Stannate with 298.95 Molecular Weight is used as a source of tin for the immersion tinning of aluminum alloys [e.G. Internal combustion engine pistons] and as tin plating salt in alkaline in plating baths. This chemical is available in 25 kg polyethylene lined steel drums. It is stored in air tight containers. In the presence of moist air potassium stannate absorbs carbon dioxide and will become less soluble in water.