Standard potassium iodide-iodate titrant standardized to 0.0125N

Titrate with potassium iodide-iodate titrant  until end point and faint permanent blue color develops.

Application

Dissolve 445.8 mg anhydrous potassium iodate, KIO3 (primary standard grade dried for several hours at 120°C),  4.25 g KI and 310 mg NaHCO3 in distilled water and dilute to 1 liter.