This experiment serves 2 objectives - the production of aspirin from esterification of salicylic acid with excess acetic anhydride and obtaining it in a purer state by recrystallisation, hence determines the melting point of the acetylsalicylic acid (asa) that was synthesised and purified. Introduction aspirin (acetylsalicylic acid) is an anti-inflammatory painkiller, which is extensively used, worldwide, for pain relief, to reduce inflammation and temperatures, and to reduce the risk of heart attacks and strokes. Preparation of recrystallization of aspirin biology essay this experiment serves 2 aims - the production of aspirin from esterification of salicylic acid with extra acetic anhydride and obtaining it in a purer province by recrystallisation, hence determines the runing point of the acetylsalicylic acid ( asa ) that was synthesised and purified.
Related documents: preparation of aspirin essay educational preparation essay educational preparation: nursing competency nursing school was established by florence nightingale in 1860 and since then the profession has grown tremendously. The procedure is being separated into two parts, 1) preparation of aspirin and 2) recrystallisation of aspirin 1, we need to put salicylic acid in 100ml conical flask, then add acetic anhydride and followed by conc sulphuric acid. Aspirin is the most widely used over-the-counter drug in the world the average tablet contains about 325 milligrams of the active ingredient acetylsalicylic acid with an inert binding material such as starch. Preparation and melting point of aspirin aspirin is a painkilling drug and is produced worldwide to reduce and stop painaspirin is made up of ehtanoylation of 2-hydroxbenzenecarboxylic acid in a presence of phosphoric acid.
Lab report introduction this lab has the following two concepts: synthesis of acetylsalicylic acid and analysis of acetylsalicylic acid synthesis is a purposeful execution of chemical reactions to obtain a product. The synthesis of aspirin is actually an esterification reaction by acid derivative, salicylic acid is treated with acetic anhydride, which will giving a chemical reaction that change hydroxyl group in salicylic acid into ester group (r-oh → r-ococh3. The synthesis of acetylsalicylic acid (aspirin) was very important in the pharmaceutical industry, by creating a way in which humans can tolerate the naturally-occurring salicylic acid molecule (1) likewise, the creation of different odors such as perfumes and mint is an enormous industry, which has a base in organic chemistry reactions. Preparation, purification and analysis of aspirin (acetylsalicylic acid) synthesis: we will prepare aspirin by reacting salicylic acid 1 with an excess of acetic anhydride 2.
There are several things to be taken away from the collected data in regards to the purity of the synthesized aspirin sample first, an average molecular weight of 17 x 10 2 g/mol was derived from titrations (table 22. Research papers 1817 words (52 pages) aspirin and its impact today essay - aspirin and its impact today aspirin, as it is known today, is a substance called acetylsalicylic acid or asa for short. 1) j olmsted iii, synthesis of aspirin - a general chemistry experiment, journal of chemical education , 75 (1998), 1261 2) royal society of chemistry. Aspirin has been used since ancient times to relieve pain and inflammation today, aspirin is often recommended for patients who have suffered heart attacks or strokes. Synthesis of aspirin from methyl salicylate introduction the synthesis of aspirin (acetyl salicyclic acid) began with methyl salicylate and sodium hydroxide as the reagent.
Synthesis of aspirin essay - part 2 abstract: the purpose of this lab is to synthesise acetylsalicylic acid (aspirin) by creating a reaction between acetic anhydride and salicylic acid. Ice ethanol methyl alcohol concentrated sulfuric acid distilled water procedure synthesis of aspirin place 3 grams of salicylic acid in a erlenmeyer flask and record the mass. Synthesis of aspirin 2009 grams of salicylic acid was used with 5000 ml of acetic anhydride the calculated mass of acetic anhydride was calculated using it's known density for a mass of 5400 grams.
Preparation of aspirin lab conclusion essay value of friendship research paper partielle ableitung 2 ordnung beispiel essay unitarian and pluralism essay writing. Chan 2 experimental synthesis of aspirin in the first part of the experiment, aspirin was synthesized a filter crucible and mortar and pestle were. Synthesis of aspirin learning goals 1 to synthesize aspirin from salicylic acid and acetic anhydride 2 to purify the crude product by recrystallization introduction most drugs are chemical compounds which are described as organic compounds because they are comprised primarily of the elements carbon, hydrogen and oxygen.
The first part of the experiment was the preparation of acetylsalicylic acid (aspirin) a white, milky mixture was obtained when salicylic acid, acetic anhydride and phosphoric acid (a catalyst) were mixed. Preparation and recrystallisation of aspirin contents page synopsis iii 1 introduction 1 11 objective 1 12 background 1 2 theory 1 3 procedure 2 31 materials 2 32 preparation 2 33 recrystallisation 3 34 determination of melting point 3 4 results and calculation 4 41 mass 4 42 percent yield 4 43 melting point 4 44 appearance 4 5.
More essay examples on aspirin rubric in 1893, felix hoffman jr discovered a way to synthesize an ester of salicylic acid for bayer laboratories in germany, acetylsalicylic acid. Preparation of aspirin 24g of salicylic acid is measured in a 100ml conical flask and is recorded 6ml of acetic anhydride is added to the salicylic acid to the flask in the fumehood. Better essays 1108 words | (32 pages) synthesis of aspirin, 2 recrystallization of aspirin, and 3 characterization of aspirin in the first section, the.