| Method of analysis of Sodium chloride |
| 1.0 PROCEDURE 1.1 Sampling Quantity: 10gm 1.2 Description: White or colorless crystals or a white crystalline powder Spread about 2.0 g of sample in a clean dry Petri dish and observe with unaided eye observed against specification. To read this GTP click here Method of analysis of Sodium Hydroxide. 1.3 Assay: By Titrimetry (limit 95.0% to 105% on such basis) Weigh accurately about 0.1 g sodium chloride and dissolve in 100 ml of water in a glass-stoppered flask. using 0.2 ml of potassium chromate solution as indicator, until the colour becomes reddish yellow. Each ml of 0.1 M AgNO3 is equivalent to 0.005844 g of NaCI. Calculation:Burette reading x Molarity factor of 0.1 M AgNO3 x 0.005844 x 100 / SpI. Wt.(g) x0.1 |