Characteristic

 

Sodium selenite is the inorganic compound with the formula Na₂SeO₃. This salt is a colourless solid. The pentahydrate Na₂SeO₃(H₂O)₅ is the most common water-soluble selenium compound.

Chemical formula:Na₂SeO₃

Molar mass: 172.948 g·mol⁻¹

Appearance: colourless solid

Density :3.1 g/cm³

Melting point: decomposes at 710 °C

Solubility in water:85 g/100 mL (20 °C)

Solubility: insoluble in ethanol

Crystal structure:tetragonal

 

Application

 

In glass manufacturingSodium selenite is used in the manufacture of colorless glass. It acts as an ingredient in some food supplements. It is an animal feed used in pet foods.