How Do You Test For Acid Number In Stearic Acid?
Stearic acid is a long straight chained hydrocarbon–fatty acid–with a carboxyl group on one end and a methyl group on the other end. The chain length varies from three to 24 carbon atoms. It is derived from tallow by a process involving the steam heating of cow fat. Acid number is expressed as milligrams of potassium hydroxide equivalent to one gram of stearic acid. Applicable to all fatty acids, acid number is expressed as milligrams of potassium hydroxide neutralized by the free fatty acid present in one gram of the substance. This value is unique to each hydrocarbon and is used to determine whether the hydrocarbon is pure or contaminated. This test is fairly easy and quick to perform. The apparatus and reagents required for this experiment are readily available. Step 1 Gather together all the equipment and reagent that you will require to conduct this test, so that you will have them handy when you begin the experiment. Wear protective clothing like gloves and goggles before you b
