How Do You Test For Saponification Number In Stearic Acid?
Stearic acid is one the chemicals that finds wide applications in industries and at home. Because of the large volumes consumed both at home and in industries, it is important to be able to determine its purity. A quick test that can be used to determine the purity of stearic acid is by determining its saponification number. This article will provide you with step-by-step instructions on how to determine the saponification number of stearic acid. Step 1 Weigh 2 grams of the stearic acid sample on the calibrated weighing scale. The weight of the stearic acid sample should fall within a 0.1 margin of error. Transfer the weighed sample of stearic acid into the 250ml Erlenmeyer flask. Step 2 Use a well-calibrated pipette to add 50 ml of the alcoholic potassium hydroxide solution. Step 3 Prepare a control experiment by adding 50 milliliters of the alcoholic potassium hydroxide into the second 250 ml Erlenmeyer flask. However, do not add a sample of stearic acid to the control. In other word
