Potassium Bicarbonate

Potassium Iodide: CAS: 7681-11-0, Molecular formula KI . Mwt. 166 gmmol is an inorganic salt of Iodine ,available in white crystalline powder form. Due to its Ionic form K+ I- , and iodide ion being a mild reducing agent , it can be easily oxidized to Iodine by powerful oxidizing agent like chlorine. With elemental iodine it forms I3 ( tri iodide) , the salts of tri iodide are highly water soluble. On long exposure to air Potassium Iodide becomes yellow due to liberation of Iodine . Potassium Iodide is more readily soluble in water. The solubility in water increases with the increase in temperature ie. ( 140 gms. 100 ml @ 20 oc, 206 gms 100 ml @ 100 oc,) . It is slightly soluble in ether, ammonia. It absorbs water less readily than Sodium Iodide and hence is convenient to use.