Sodium Selenite also known as a Disodium salt of Selenious Acid is a white solid, highly soluble in water, solubility in water : about 85 gms /100ml @ 20°c., but not soluble in ethanol. It has the Mol. Formula Na2SeO3 with Selenium having (+4 )oxidation state

Application

Sodium Selenite is a white, sand-like solid. It is used to remove green color from glass, as a laboratory chemical and as a medication.