Acetylsalicylic Acid Introduction: The purpose of this experiment is to create and isolate pure acetylsalicylic acid from the substances salicylic acid and acetic anhydride. Then one will find the melting point to determine purity. Procedure: Make a hot bath. Weigh some salicylic acid and place in conical vial. Add .480mL of acetic anhydride and a drop of concentrated phosphoric acid. Drop in a magnetic spin vane and attach air condenser to vial. Partially submerge it in hot water. Stir with spin
Free Aspirin Carboxylic acid Acetic anhydride
The conventional method was conducted by placing 2.0641 grams of salicylic acid in a dry 125 mL Erlenmeyer flask. In a fume hood‚ 4 mL of acetic anhydride and 5 drops of concentrated sulfuric acid were added to the flask. The contents were swirled in the flask and then heated for 20 minutes in a hot water bath. After the 20 minutes were up‚ 10 mL of cold water were added in 1 mL increments. The flask was cooled for 10 minutes and occasionally stirred. The crystals that formed were collected via filtration
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glass Thermometer Filter paper 600 ml Beaker Large test tubes Hot plate Funnel Chemicals Acetic anhydride 1% Ferric Chloride Solution Salicylic Acid Ice Ethanol Methyl Alcohol Concentrated Sulfuric Acid Distilled Water Procedure Synthesis of Aspirin 1. Place 3 grams of Salicylic acid in a Erlenmeyer flask and record the mass 2. Add 6 ml of Acetic anhydride to the flask of salicylic acid 3. Add 5 drops of concentrated sulfuric acid to the flask of salicylic acid
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Materials for synthesis of aspirin * Pear shaped flask * 2.0 g of hydrobenzenecarboxylic acid * Fume cupboard * 4 cm3 of ethanoic anhydride * Flask with reflux condenser * 5 drops of phosphoric acid * Water bath * ice * 100 cm3 beaker
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synthesized using the Co(acac)3 complex produced in Experiment 2. The Co(acac)3 complex is used as a reagent instead of acacH because acacH cannot be directly converted to 3-nitroacetylacetone. Since Co(acac)3 is not stable in HNO3‚ Cu(NO3)2 and acetic anhydride are used in this reaction to produce the final product‚ Co(acac·NO2)3. The exact mechanism of the reaction is unknown‚ however‚ it is believed to proceed as follows: 1) [pic] 2) [pic] Data and Calculations Table 1: Measurements of weights and
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compositions without yellowing of the topcoat. SUMMARY OF THE INVENTION In accordance with the present invention‚ there is provided a plastisol based composition comprising: (a) a copolymer of an aliphatic olefinically unsaturated material and an anhydride containing material; and (b) a polyvinyl chloride plastisol. DETAILED DESCRIPTION OF THE
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Clays are one of the important natural materials‚ which have been examined for catalytic applications. Clays are characterized by a layered structure and hence they are slippery when wet. They are broadly classified as cationic or smectite type (having layer lattice structure in which two-dimensional oxyanions are separated by layers of hydrated cations) and anionic or brucite type (in which the charge on the layer and the gallery ion is reversed complimentary to smectite type). Anionic clays are
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Point A. Abstract Aspirin is the common name for the compound acetylsalicylic acid‚ widely used as a fever reducer and as a pain killer. The first part of the experiment aims to synthesize aspirin from the reaction of salicylic acid with acetic anhydride with the aid of phosphoric acid as a catalyst. The second part of the experiment aims to assess the purity of aspirin through the determination of its melting point and comparing it to the accepted value. An oil bath was used in the determination
Free Aspirin Acetic acid Carboxylic acid
quigs‚ but their sled crashes. Press is captured by Bedwoodan knights and Bobby passes out. Bobby is rescued by Osa‚ a traveler warrior woman‚ and her daughter Loor‚ also a traveler and dislikes Bobby throughout most of the story. They are joined by Alder‚ a Bedwoodan knight who’s actually a traveler from Denduron in disguise. All three of them explain the conflict that Denduron is in. There are two tribes‚ the Milago and Bedwoodan. The Milago receive vile and cruel treatment from the Bedwoodan. The
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And it all started with the ’Mera Wala’ campaign. "The tagline became so popular that people would go up to stores and ask for ’mera wala blue’ or ’mera wala green’‚" says Amit Syngle‚ VP - sales & marketing‚ Asian Paints. "It became a generic term and showed the involvement of people with the campaign." The commercial and the subsequent Asian Paints campaigns marked a beginning of a bond for Piyush Pandey‚ executive chairman & creative director - South Asia‚ Ogilvy with the brand that would
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