
Determination of Available Chlorine Content in Trichloroisocyanuric Acid by Titration
Required materials and tools 1. Soluble starch 2. Concentrated sulfuric acid 3. 2000ml Beaker 4. 350ml beaker 5. Weighing paper and electronic scales 6. Purified water 7. Sodium thiosulfate analytical reagent Preparing stock solution of sodium thiosulfate Measure 1000ml purified water by using 500ml measuring cups twice and pour it into a 2000ml breaker. Then pour a whole bottle of sodium thiosulfate analytical reagent into the beaker directly, Put the beaker on the induction cooker until the solution boils for ten minutes. After that, Keep it cool, and still for two weeks, then filter it to get the stock solution of sodium thiosulfate. Preparing 1+5 sulfuric acid Measure 750ml purified