Extraction and Evaporation: Separating the Components of "Panacetin"
Submitted- July 17, 2012 Introduction The purpose of this lab is to investigate the composition of a compound suspected to be Panacetin, a type of pain-killer. Panacetin is typically made up of sucrose, aspirin, and acetaminophen, but the third component in this experiment is unknown. The unknown component is suspected to be a chemical relative of acetaminophen, either acetanilide or phenacetin. Using techniques such as extraction, evaporation, and filtration, the three components will be isolated based on their solubilities and acid-base properties. Then, the percent composition of Panacetin can be deduced based on the masses of the three dried components. The …show more content…
Caption: This shows the reaction between aspirin and sodium bicarbonate to form a salt called sodium acetylsalicylate, with by-products of water and carbon dioxide.
Discussion Panacetin is known to be composed of three different components: sucrose, aspirin, and an unknown, which is either acetanilide or phenacetin. It was expected to contain 10% sucrose, 50% aspirin, and 60% of the unknown. To find the composition of the 0.4015 g Panacetin, techniques of centrifugation, extraction, and evaporation were used to isolate and study the different components. When dichloromethane was added to the Panacetin and then centrifuged using a Fischer Scientific Centrific 228, it was observed that a solid sucrose pellet had