What is acetylsalicylic acid? Acetylsalicylic acid (ASA)‚ or more commonly known as aspirin‚ is a medication that can be used for pain‚ fevers‚ and inflammation. It can be used for long periods of time‚ in small amounts‚ to prevent heart attacks‚ strokes and the formation of blood clots. A heart attack victim can be given a low dose right after the ordeal to reduce the risk of another one. Side effects of this drug is ulcers‚ internal bleeding (stomach) and ringing in the ears. These mainly happen
Premium Myocardial infarction Opioid Morphine
was taken in duplicate) was mixed with 1800 μl of ABTS solution was mixed with it for each concentration. Similar process was repeated for ascorbic acid concentration. All test tubes (ethyl acetate soluble fraction‚ ethyl-3-hydroxy-5-methoxy-4-methylbenzoate‚ ascorbic acid‚) labeled separately were shaken well and incubated in the dark at 25oC for 30 minutes. Then the Kinetic absorbance was recorded at 734 nm by spectrophotometer after 1 and 6 minutes for each concentration and mean was taken for
Premium Ethanol Solvent Ascorbic acid
Preparation of Synthetic Banana Oil Introduction: In this lab the synthesis‚ purification‚ and characterization of isoamyl acetate‚ or banana oil‚ was determined. The synthesis was completed by a reversible esterification reaction which required the heating of glacial acetic acid and isoamyl alcohol‚ combined with a sulfuric acid catalyst in hexane. In order to increase the efficiency of the reaction‚ LeChatelier’s Principle is utilized by removing water from the products. As a result‚ the reaction
Premium Ester Acetic acid Ethanol
because hydrocarbons are non polar. What causes them to be non polar is that they have an even distribution of electrons between the carbon and hydrogen atoms of 0.3. And as a result this does not result in the formation of an electrophile. Methylbenzoate‚ however is polar. Sulfuric acid therefore is able to protonate the methyl benzoate. The sulfuric acid protonates the nitric acid to generate the necessary electrophile. Protonated nitric acid loses water to form a nitronium ion‚ which is the
Premium Chemistry Benzene Sulfuric acid
Introduction Generally‚ PET can be produced in two steps by one of two ways‚ called the DMT and the TPA processes‚ or the transesterfication and direct esterification routes‚ respectively. Since its commercialization in the 1950’s by DuPont‚ PET was predominantly synthesized out of DMT due to the fact that this monomer‚ compared to TPA‚ was relatively easily purified by distillation. Yet‚ since the 1960’s‚ purified TPA became available by the development of new technologies and gained a lot of importance
Premium Chemical reaction
in a lot of natural products like flowers‚ spices and fruits. They are usually used in artificial flavorings. Carboxylic esters help amplify the sensory effect of esters. Isopentyl acetate is made from the direct esterification of acetic acid and isopentyl alcohol. The direct esterification of acetic acid and isopentyl alcohol is an equilibrium reaction that shifts the product to the side by using the excess of one of the starting reagents. Acetic acid usually used in excess because it is easier to
Premium Chemistry Solvent Acetic acid
2 3.Theory 3.1 Recrystallisation 3 3.2 Esterification 3 4.Procedure 4.1 Preparation of aspirin
Premium Aspirin Acetic acid Chemistry
PREPARATION OF BIODIESEL FROM WASTE COOKING OIL In partial fulfillment of the requirements for the award of the degree of Bachelor of Engineering in Mechanical Engineering Submitted by Ritesh Shukla Pankaj Singh Bais Ciby Ninan Ankush Deshmukh Under the guidance of Prof. SUSHANT S. SATPUTALEY (Assistant Professor of Mechanical Engineering) Academic Year 2010-11 Department of Mechanical Engineering ST. VINCENT
Premium Petroleum Biodiesel
Chris CXXXX Organic Chemistry Lab Dr. Lyn XXXX 2 February 2012 Esterification of Isopentyl Alcohol to Isopentyl Acetate Procedure The technique for esterification that was employed in the experiment was to use a reflux apparatus (Figure 1) while heating in order to evaporate out water to drive our reaction into the product favored direction. The starting material of isopentyl alcohol (1.0 mL) and excess glacial acetic acid(1.5 mL‚ 17.6M) were eppendorf pipetted into a 5 mL conical vile. This
Premium Acetic acid Ester Ethanol
(1977) Agbalumo pectin; Extraction and Properties 21. Institute of food Technology (I.F.T). (1959) Pectin standardization: Final Report of the I.F.T Committee‚ J 22. Speiser‚ R. and Eddy‚ C.R (1946) Effect of Molecular weight and Method of de-esterification on the gelling 23. Hills C.H Moltern‚ H.H Nutting‚ G.C and Speiser‚ R (1949)
Premium PH Acetic acid Ester