Sodium tellurite is an inorganic compound

Sodium tellurite is an inorganic compound, the chemical formula is Na2TeO3, is a white crystalline powder, soluble in water, in the air will be heated into Na2TeO4 tellurite.  Used for organic synthesis and bacteriological research.  White crystalline powder.  Hexagonal crystal structure.  Density 2.52 ~ 2.60g/cm3.  It is soluble in water and does not absorb moisture.  Easy to absorb carbon dioxide in the air, partial carbonation.  At 25℃, 44.97g of 100g water can be dissolved.  It is a scientific reagent for bacteria.  Sodium tellurite can be prepared in the same way as lithium tellurite, that is, the amount of tellurium dioxide is melted together with sodium carbonate, and after cooling, Na2TeO3 crystal of sodium tellurite is obtained.  Sodium tellurite can also be crystallized from aqueous solution.  According to the stoichiometric ratio, tellurium dioxide is dissolved in hot sodium carbonate or sodium hydroxide solution, the resulting sodium tellurite solution is cooled, and anhydrous ethanol is added to it, that is, the crystallization of sodium tellurite hydrate is precipitated.  The crystallization of anhydrous salt can be obtained by heating and dehydrating the hydrated salt in a vacuum.  

Sodium tellurite is an inorganic tellurium compound with the formula Na2TeO3. It is a water-soluble white solid and a weak reducing agent. Sodium tellurite is an intermediate in the extraction of the element, tellurium; it is a product obtained from anode slimes and is a precursor to tellurium.

Application：

Sodium tellurite improves the corrosion resistance of electroplated nickel layers. Solutions of sodium tellurite are used for black or blue-black coatings on iron, steel, aluminum, and copper. In microbiology, sodium tellurite can be added to the growth medium to isolate bacter