Na2SnO33H2O

Sodium stannate trihydrate is an inorganic compound with the chemical formula Na2SnO3·3H2O. It is the hydrated form of sodium stannate. This compound typically appears as a white crystalline solid. It is soluble in water, forming an alkaline solution due to hydrolysis.

Sodium stannate trihydrate is prepared by reacting tin(IV) oxide or metastannic acid with sodium hydroxide. The reaction produces the sodium stannate salt, which then crystallizes with three molecules of water.

The primary uses of sodium stannate trihydrate are in electroplating and as a source of tin in various chemical processes. In electroplating, it is used to deposit a tin coating onto other metals, providing corrosion resistance and improved solderability. It can also be employed as a mordant in dyeing textiles, helping to fix dyes to fabric. Additionally, it has found applications in the production of certain types of ceramics and glazes.

When handling sodium stannate trihydrate, it is important to note its alkaline nature. Contact with skin and eyes should be avoided, and appropriate personal protective equipment should be worn. It should be stored in a cool, dry place, away from acids and strong oxidizing agents.