Tag: Na2seo3

While both sodium selenite ($Na_2SeO_3$) and table salt ($NaCl$) contain sodium, their chemical formulas and properties are vastly different. One is a common food seasoning, while the other is a toxic trace mineral supplement with industrial uses that must be handled with care.

Sodium selenite, an inorganic salt with the formula Na₂SeO₃, is a widely used source of the essential trace element selenium. It is a chemical compound, not a simple element, composed of sodium and selenite ions. To understand its function and applications, one must first explore exactly what does sodium selenite contain.