Essays Tagged: "Salicylic acid"


temperature and pain. The formula for aspirin is CH3CO2C6H4CO2H. Aspirin's scientific name is actylsalicylic acid (ASA). The main ingredient in ASA is salicylic acid. This ingredient grows in small r ... . He began looking for a less acidic formulation. His search led him to the synthesization of acetylsalicylic acid. The compound shared the therapeutic properties of other salicylates, but caused less ...

(3 pages) 90 1 4.3 Dec/1996

Subjects: Humanities Essays > Health & Medicine

Synthesis of Asprin

HESIS of ASPIRIN"PURPOSE:In this experiment is to obtain aspirin. Aspirin is prepared by acetylated salicylic acid I a process called esterification. Esterification is the reaction of the carboxyl (-C ... ter group. In this case the source of the -OH group is the phenolic -OH attached to the ring of the salicylic acid. The acetyl group comes from acetic acid anhydride, and the reaction is catalyzed by ...

(2 pages) 97 1 3.0 Mar/2004

Subjects: Science Essays

Organic Synthesis of Aspirin Chemistry Formal Lab.

spirinAbstractThe purpose of this experiment is to synthesize a common organic product called acetylsalicylic acid (aspirin), and to become familiar with the optimum conditions needed for successful y ... onditions needed for successful yields. Aspirin is produced from an acid catalyzed reaction between salicylic acid with acetic anhydride. The crystalline aspirin is synthesized and purified by recryst ...

(5 pages) 345 3 4.7 Apr/2004

Subjects: Science Essays

Felix Hoffman: the Founder of Aspirin.

d the power to relieve pain.Between 1800 and 1835 chemists were able to extract the salcin and make salicylic acid, and make it into amounts for human consumption, but they found it was very hard on p ... tomachs. In 1853 a French researcher named Charles Frederic Gerhardt, found a way to neutralize the salicylic acid by adding sodium and acetyl chloride. Strangely his research stopped there and no pro ...

(3 pages) 20 0 0.0 Jan/2006

Subjects: Science Essays

Inorganic and Organic Chemistry(CP4006) - Preparation and Recrystallisation of Aspirin

he melting point determination.The method used to synthesize aspirin was esterification by reacting salicylic acid with acetic anhydride with the presence of dehydrating agent, conc. sulphuric acid, t ... %. The melting point observed from the product ranged from 133°C to 137°C.IntroductionAcetylsalicylic acid or commonly known as aspirin is an organic compound belong to ester group with conden ...

(7 pages) 128 0 4.2 Jul/2006

Subjects: Science Essays > Chemistry

Aspirin And Acetaminophen

one of the best known aromatic acetates. The most important compound in the synthesis of aspirin is salicylic acid. It is created from phenol by a process discovered by a German chemist, Hermann Kolbe ... noxide is heated with CO2 under pressure. The product of this reaction is then acidified to produce salicylic acid.From there, salicylic acid under goes esterfication. Esterification is the acid-catal ...

(4 pages) 35 0 0.0 Sep/2001

Subjects: Science Essays > Chemistry

Preparing of Aspirin

rin were conducted and followed by recrystallisation to have it purified. Aspirin was prepared from salicylic acid and acetic anhydride. Concentrated sulphuric acid was added to speed up the reaction. ... termined in order to check the purity of aspirin.Theoretical yield of aspirin expected from 2.4g of salicylic acid was calculated to be 3.15g. With the actual yield that was measured to be 0.99g, perc ...

(6 pages) 47 2 3.8 Dec/2007

Subjects: Science Essays > Engineering > Chemical Engineering

This is a lab report on the "Synthesis of Organic Aspirin" for first year chemistry.

alled aspirin, and to become familiar with achieving successful yields. Aspirin is synthesized from salicylic acid and acetic anhydride. Those two chemicals are mixed together along with sulfuric acid ... centage will almost never be a hundred percent.Introduction:In 1897 Felix Hoffman synthesized acetylsalicylic acid when he was treating is father with today's so called aspirin due to his suffering of ...

(6 pages) 143 0 5.0 Feb/2008

Subjects: Science Essays > Chemistry

Preparation and Recrystallisation of Aspirin

force the skill of determinating melting point of recrystallised compound.In order to prepare acetylsalicylic acid (aspirin), salicylic acid is firstly weighed and acetic anhydride is followed to be a ... ined and the reasons might be due to some errors made.2.IntroductionAspirin, or also known as acetylsalicylic acid is commonly used as antipyretic to reduce fever, as analgesic to relieve pains and ac ...

(2 pages) 34 0 1.0 Jun/2008

Subjects: Science Essays > Chemistry

Organic Synthesis: Preparation & Analysis of Aspirin

In this experiment we analyzed and synthesized organic compound acetylsalicylic acid or aspirin from acetic anhydride and salicylic acid. H2SO4 was used as a catalyst to ... Bayer Company) manages to reduce side effects and create aspirin.Aspirin is synthesized by reacting salicylic acid and acetic anhydride Acetic anhydride is a liquid at room temperature with a boiling ... room temperature with a boiling point above 100˚C and reacts with H2O to form acetic acid. The salicylic acid and aspirin are both solids that melt at temperatures above 100˚ C Synthesis of ...

(3 pages) 106 0 5.0 Nov/2008

Subjects: Science Essays > Chemistry

Preparation and Recrystallisation of Aspirin

.To find out the purity of aspirin obtain by recrystallisation of prepared aspirin from reaction of salicylic acid with acetic anhydride. Purity can be determined by identify the melting point of aspi ... erimental amount of aspirin formed by esterification of reactants. To get percentage yield, mass of salicylic acid is used to calculate out the theoretical mass of aspirin. While mass of aspirin obtai ...

(10 pages) 47 0 5.0 Dec/2009

Subjects: Science Essays > Chemistry


Experiment 3Hydrolysis of Methyl SalicylateAimTo produce salicylic acid via the hydrolysis of methyl salicylate under basic conditions.IntroductionMethyl Sal ... cient in deep heating liniments and in small amounts as a flavouring agent at no more than 0.04%.[1]Salicylic acid is a colorless crystalline organic acid is widely used in organic synthesis and funct ... he solvent was not lost to the atmosphere. This was an important step in ensuring a higher yield of salicylic acid by ensuring that sodium salicylate, the compound formed after hydrolysis of NaOH was ...

(10 pages) 1 0 0.0 Mar/2012

Subjects: Science Essays


(4 pages) 11 0 0.0 Apr/2012

Subjects: Science Essays > Mental Health