raspberries‚ cucumbers‚ carrots and olives produce parabens to protect themselves against bacterial attacks -unwise to switch to other‚ newer‚ synthetic or untested preservatives‚ just to say you don’t use parabens. Parabens are a family of alkyl esters of para-hydroxybenzoic acid that differ by various chemical substitutions. Up to 60 percent of whatever we place on our skin goes into our blood stream. Yet companies are blatantly adding ingredients to our personal care products and our food deemed
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Chikungunya is a bacterial disease that is transmitted to people by mosquitoes. Outbreaks usually have occurred in countries such as Africa‚ Asia‚ Europe and areas close to the Indian and Pacific oceans. In late 2013‚ America had their first patient that had the virus chikungunya. It was found on the islands in the Caribbean’s. Travelers that travel the world are at high risk of getting this bacterial virus chikungunya. There is no vaccine or any type of medications that can prevent the bacterial
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spectra are needed to correctly determine the structure of B. By comparing the IR spectrum for Compound B it can see that it is 1-(4nitrophenyl)ethanoate‚ this is indicated by the peak at 763.16cm-1 when compared against literature values for IR Spectroscopy shows a C-H bend in the ortho position of the phenyl ring‚ which points to the position of ethanoate being on the 4th carbon. Looking back at the yields it can be see that there has been an error in the drying process for Benzanilide resulting
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38 Sujet : Subject Référence : Reference EUROPEAN REGULATION – REACH Pages Pages CE9 Version : Revision Q Date: 09/12/10 Etabli par : V.NGUYEN Established by Validé par : Approved by C. De Meerschman RÉFÉRENCE NORMATIVE NORMES REFERENCE CHAMPS D’APPLICATION APPLICATION FIELD OBJECTIFS PURPOSE Regulation 1907 / 2006 of the 18th December 2006 All the products European frame for the REACH Regulation WARNING: The user is responsible for checking any
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UNIVERSITY OF THE GAMBIA LECTURE NOTES COURSE: PRINCIPLES OF CHEMISTRY II (ORGANIC CHEMISTRY) CODE: CHM 161 2ND SEMESTER SESSION: 2012/2013 LECTURER: ANTHONY F. ADJIVON UNIT 1 INTRODUCTION Organic chemistry started as the chemistry of life‚ when that was thought to be different from the chemistry in the laboratory. Then it became the chemistry of carbon compounds‚ especially those found in coal. Now it is both. It is the chemistry of the compounds of carbon along with other elements
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FOUNDATION CHEMISTRY II CHM096 CHAPTER 1 ORGANIC CHEMISTRY PART I PREPARED BY SYED ABDUL ILLAH ALYAHYA BIN SYED ABD KADIR 1 TOPICS PART I 1.1 1.2 1.3 1.4 1.5 Introduction to Hydrocarbon and Functional Groups Alkanes and Cycloalkanes Isomerism and Overview of Organic Reaction Alkenes and Alkynes Alkyl Halides 2 TOPIC INTRODUCTION TO HYDROCARBON AND FUNCTIONAL GROUPS 3 1.1 Introduction to Hydrocarbon and Functional Groups What is Organic Chemistry?
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C (d) None of the above (Q.4) (CH3)3CMgBr on reaction with D2O gives: ( 1 mark ) (a) (CH3)3CD (b) (CH3)3COD (c) (CD3)3CD (d) (CD3)3OD (Q.5) The silver salt of fatty acid on refluxing with an alkyl halide gives an: ( 1 mark ) (a) Acid (b) Ester (c) Ether (d) Amine (Q.6) Which of the following is the most reactive towards nucleophilic substitution reaction? ( 1 mark ) (a) C6H5Cl (b) CH2=CHCl (c) ClCH2CH=CH2 (d) CH3CH=CHCl (Q.7) The molecule with the highest dipole moment is: ( 1 mark
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benzaldehyde‚ 2-butanone‚ propanoic acid‚ sucrose‚ diethyl ether‚ butyl bromide‚ acetonitrile‚ L-alanine‚ n-amyl acetate‚ benzene sulfonyl chloride and aniline were used as test compounds. Observations were noted‚ such as changes in color and product formation. Iodine test‚ bromine test‚ Baeyer Test‚ Chloroform and aluminum chloride‚ fuming sulfuric acid‚ acetyl chloride‚ chromic acid‚ iodoform‚ Lucas’ test‚ Anilide formation‚ ester formation‚ hydrolysis‚ hydroxamic acid‚ Benedict’s test‚ Chromic
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CHAPTER 1 INTRODUCTION 1.1 PRELIMINERIES Due to highly development of chemical and biochemical industries‚ acetic acid has largely produced to fulfil the needs of world demand in production of daily used products and for pharmaceutical needs. Therefore‚ this study is carried out to introduce the production of acetic acid using biological pathways which includes the used of microorganisms. In this chapter will briefly explained on the knowledge about acetic acid and the microorganism
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“Fmoc chemistry”. The first part of experiment was the synthesis of L-phenylalanine methyl ester hydrochloride. The methyl ester can be synthesised by reaction of thionyl chloride‚ SOCl2 and dry methanol with L-phenylalanine under reflux condition. The peptide bond was formed later in the experiment‚ where HBTU‚ DiPEA and a solution of Fmoc-Gly-OH in DMF were added to a solution of L-phenylalanine methyl ester hydrochloride in DMF. The product formed was the protected dipeptide‚ Fmoc-Gly-Phe-OMe. The
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