Acetic acid

Cinnamic acid was purified by hot filtration and recrystallized by a cold solvent. The solvent used in the experiment was water. Water is the ideal solvent for it has low solubility at low temperatures and high solubility at high temperatures. Cinnamic acid was obtained from the last lab. It was observed to be a white and flaky powder. The vial with the CA weighed and was 14.23g. From data collected from last week, the vial alone was 13.90g. Therefore, there was .33 g of CA (14.23-13.90g). The percent

N-phenylacetamide. The synthesis below, depicts aniline reacting with acetic anhydride yielding acetanilide and acetic acid (amine to amide). Solubility in H20 25 ° C Solubility in water 75 ° Molar mass g/mol Mass (g) Density g/ml # of moles M.P Acetic Anhydride .12 g/mL 102.09 1.08 Aniline .036 g/mL 93.12 .31 1.02 .00333 Acetanilide <.0056 g/mL 135.16 .41 1.22 .00303 114.3 Safety Hazards Acetic Anhydride Irritant (eyes/skin). Toxic by inhalation, flammable Aniline

does not irritate the stomach (Richman, 2004). It also has very low toxicity is it is used properly. Acetaminophen is cheap and easily obtainable from any pharmacy. Acetaminophen is created when the amine group of p-aminophenol is acetylated by acetic anhydride. This creates an amide functional group and the

Glass ionomer cement[GIC], invented by Wilson and Kent, has been used as a dental restorative material for more than four decades and its properties are constantly improved to overcome its shortcomings. The unique properties of GIC include direct adhesion to tooth and base metals [1], anticariogenic properties [2], thermal compatibility with tooth enamel and dentin, minimized microleakage at the tooth–enamel interface, biological compatibility, and minimal cytotoxicity. The disadvantages of GIC such

aMicroscale Synthesis of Isopentyl Acetate (Banana Oil) Objective: Carried out the microscale synthesis of isopentyl acetate by direct esterification of acetic acid and isopentyl alcohol. This was an acid catalyzed Fischer esterification. Both extraction and distillation were employed to obtain a pure product. IR spectroscopy and gas chromatography were used to determine purity of the final product. Reagents: * Compound: | * MW (g/mol): | * MP (°C): | * BP (°C): | * Density (g/mL):

aspirin or commonly known as acetylsalicylic acid and methyl salicylate (oil of wintergreen) were synthesized through an esterification process and then the purity of some of the molecules was determined through analytical techniques. During part one of this experiment, aspirin was synthesized. Salicylic acid and acetic anhydride were mixed to produce acetylsalicylic acid (aspirin). Typically, acetic acid is used but the reaction with acetic acid is slow and does not go to completion.

through the pharmaceutical method of organic synthesis. The most common drug is acetylsalicylic acid, known commonly as Aspirin. C_7 H_6 O_3 (s)+C_4 H_6 O_3 (aq)→C_9 H_8 O_4 (s)+C_2 H_4 O_2 (aq) In this experiment, Aspirin, along with acetic acid, was a product of the chemical reaction between salicylic acid and acetic anhydride – as shown by the chemical formula above. The product, acetylsalicylic acid, shows three structural features: an aromatic ring, a carboxylic group, and an ester group (as

pKa of a monoprotic weak acid, polyprotic weak acid, as well as, a free amino acid, alanine. Acids and bases were defined by Bronsted-Lowry in 1923, in which acids were described as substances capable of donating a proton and bases are substances capable of accepting a proton (Thompson and Dinh 2009). In addition to defining acids and bases, Bronsted-Lowry further classified acids and bases as being either strong or weak. By definition, a strong acid or base is a substance that

synthesize aspirin, salicylic acid and anhydride was used to drive the reaction to completion. In the synthesis of oil of wintergreen we reacted salicylic acid and methanol to produce methyl salicylate. This reaction is an example of a condensation reaction where the carboxylic acid and alcohol group combine to form an ester. In producing aspirin, we wanted to obtain the purest form, so we removed impurities such as unreacted salicylic acid and acetic acid. Acetic acid was removed by rinsing the sample

) Ester are often prepared by the Fischer esterification method, which involves heating a carboxylic acid with an alcohol in the presence of an acid catalyst. Theory: Synthesize isopentyl acetate by combining isopentyl alcohol with acetic acid and sulfuric acid and then heating the reaction mixture under reflux for an hour. The alcohol is the limiting reactant, so it should be weighed/ the acids can be measured by volume. The esterification reaction is reversible, and it has an equilibrium constant