Acetylsalicylic Acid (Aspirin) Synthesis

Powerful Essays
Lab Report 5: Acetylsalicylic Acid (Aspirin) Synthesis

Name: Divya Mehta
Student #: 139006548
Date Conducted: November 19th 2014
Date Submitted: November 26th 2014
Partner’s Name: Kirsten Matthews
Lab Section: Wednesday 2:30 L9
IAs Name: Brittany Doerr

For the procedure, see lab manual (CH110 Lab Manual, Fall 2014) pages 96-98.
Wilfrid Laurier University Chemistry Department. Fall 2014. Acetylsalicylic Acid (Aspirin) Synthesis. Pages 96-98 in Chemistry 110 Lab Manual. Wilfrid Laurier University, ON, Canada.


The purpose of this experiment was to determine the level of purity by using the values for melting point and absorbance and chemically synthesizing aspirin by using phosphoric acid as a catalyst. Pure ASA crystals are isolated from the solution with a Hirsch Funnel that was used with a filter. The melting point of the pure ASA crystals were calculated in order to calculate of absorbance. Iron (III) salicylate dianion must contain the acidified solution Fe3+ in order to measure the absorbance values. The level of the impurity can
…show more content…
Table 1: Results from the Salicylic acid (g) and the Purity of ASA (g) Experiment
Mass of salicylic acid (g) 0.14 g
Mass of filter paper (g) 0.47 g
Mass of “impure” ASA + filter paper (g) 0.56 g
Mass of prepared “impure” ASA (g)
…show more content…
The powder on the filter paper could've fell and this caused it to have a smaller percent purity, percent yield and also cause a lower absorbance and concentration of pure ASA. Another error would be not using a properly dried sample for the pure ASA in part C when making the crystals, this could have cause tye percent yield error. This would make a lower melting point. To prevent this from occurring next time there could be a dry sample that is completely dry and this would not alter the mass of the sample and this would make the solution have a more
Get Access