Fuel , , To prepare aspirin, salicylic acid is reacted with an excess of acetic anhydride. Chemical Reviews , 8 , The maximum allowable amount of free salicylic acid in an aspirin sample is 0. Chemical Research in Toxicology , 22 7 , Swift sono-hydrothermal synthesis of pure NaX nanocrystals with improved sorption capacity from industrial resources.
Rapid ultrasound assisted hydrothermal synthesis of highly pure nanozeolite X from fly ash for efficient treatment of industrial effluent. Results and Discussion Solid salicylic acid structures were dissolved in presence of acetic anhydride which is catalyzed by acid. Chemistry of Materials , 21 4 , If crystals do not appear, you can scratch the walls of the flask with a stirring rod to induce crystallization. Report Report the theoretical yield and the percent yield of the aspirin product. Record it in your notebook and turn in your product to the Stockroom.
Calculate the weight of your product by subtracting the weight of the paper and bag from the total. The Journal of Physical Chemistry C , 27 ,
Ultrasonics Sonochemistry , 42, Anas K. Sealy, Russell G. Journal of the American Chemical Society , 1 ,
A small amount of a strong acid is used as a catalyst which speeds up the reaction.
Rapid ultrasound assisted hydrothermal synthesis of highly pure nanozeolite X from fly ash for efficient treatment of industrial effluent. Once the reaction was complete, 20 drops of distilled water was cautiously added to the mixture followed by 20 ml of distilled water. Kassaee, David S. Graham, Sarah C.
Sivamani Sivalingam, Sujit Sen. The theoretical maximum yield is 3. Also, your melting point range may be greater than 2 degrees. The salicylic acid and aspirin may cause irritation to your skin or eyes, but are basically not hazardous.
Calculate the weight of your product by subtracting the weight of the paper and bag from the total. The mixture was heated on a hot plate until all the salicylic acid was dissolved. In this experiment, the crude product will be the desired product.