Preparation of sodium periodate
Erlenmeyer flask is placed 12.7 grams of iodine and 60 g minced (54 ml) 10% NaOH solution. Heat the flask gently until dissolved iodine. Now close the flask twice pierced stopper and glass tube to introduce chlorine solution. The reaction mixture was heat it almost to boiling. During the reaction begins before sodium periodate. After further periodate does not fall out, the introduction of chlorine and end the contents of the flask aside to cool, the resulting precipitate was filtered and the filter washed with water.