SAFETY DATA SHEET TIXOSIL 38A Revision: 2.00 BR ( EN ) Issuing date: 21.01.2013 1. IDENTIFICATION OF THE SUBSTANCE/MIXTURE AND OF THE COMPANY/UNDERTAKING 1.1 Product identifier Trade name : TIXOSIL 38A 1.2 Relevant identified uses of the substance or mixture and uses advised against Uses of the Substance/Mixture : Specific use(s): Adsorbents‚ Desiccant‚ Flow improver Uses advised against : Medicinal products 1.3 Details of the supplier of the safety data sheet Company
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polyhaloarenes depending upon the hydrocarbon residue in the molecule. Haloalkanes and haloarenes are important intermediates in synthetic organic chemistry due to‚ (i) the greater ease with which these derivatives can be prepared. (ii) their high reactivity. CLASSIfICATION The compounds formed by replacement of one or more Hydrogen atoms from hydrocarbon molecule by corrersponding number of halogen atoms are called halogen derivatives or halides. Hydrocarbon Halogen
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Title: Relativities of Alkyl Halides in Nucleophilic Substitution Reactions Introduction: The purpose of this lab was to perform a comparison of relative reactivities of various alkyl halides with two different reagents‚ sodium iodine in acetone and silver nitrate in ethanol. (Below are the reaction equations). We used different substrates‚ which were primary‚ secondary‚ and tertiary. These substrates included 2-bromobutane‚ 2-bromo-2-methylpropane‚ 1-bromobutane ∞-Bromotoluene‚ bromobenzene
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CHEMISTRY (Theory) Time allowed : 3 hours General Instructions: (i) All questions are compulsory. Maximum Marks : 70 (ii) Marks for each question are indicated against it. (iii) Question numbers 1 to 8 are very short-answer questions and carry 1 mark each. (iv) Question numbers 9 to 18 are short-answer questions and carry 2 marks each. (v) Question numbers 19 to 27 are also short-answer questions and carry 3 marks each. (vi) Question numbers 28 to 30 are long-answer questions and carry 5 marks
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General Features of Oxidative Additions Oxidative addition reactions usually involve a coordinatively unsaturated 16-electron metal complex or five-coordinate 18-electron species‚ and take the general from: [pic] If the A and B ligands in the product are considered to be formally –1‚ then the metal center has increased its oxidation state by +2‚ and this is the origin of the name oxidative addition. Oxidative reaction can occur when a metal complex
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purity from melting point and boiling point information. * Understand the importance of purity in substances in everyday life.eg. foodstuffs and drugs B. THE STRUCTURE OF MATTER. 1. Atomic structure. * State the relative charges and approximate relative masses of protons‚ neutrons and electrons. * Define proton number and nucleon number. * Use proton number and the simple structure of atoms to explain the basis of the Periodic Table (Ref. Z=1 to 20) * Define isotopes
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methods‚ particularly quantitative methods‚ are more objective or less prone to bias (Agar‚ 1980; Forsythe‚ 1999). This article is an initial response to that criticism. Observer effects Also sometimes referred to as ‘researcher effects‚’ ‘reactivity‚’ or the ‘Hawthorne effect’‚ are often understood to be so pervasive that
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converted to alkyl halide. Since the reaction can be reversed‚ the strong sulfuric acid was to make sure the product would indeed be an alkyl halide. This is necessary for a shift towards alkyl halide because the acid dehydrates and it reduces the reactivity of water and also protonates alcohol to speed up the ion production. The first step of the reaction is the protonation
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Objectives After studying this Unit‚ you will be able to • name haloalkanes and haloarenes according to the IUPAC system of nomenclature from their given structures; • describe the reactions involved in the preparation of haloalkanes and haloarenes and understand various reactions that they undergo; • correlate the structures of haloalkanes and haloarenes with various types of reactions; • use stereochemistry as a tool for understanding the reaction mechanism; • appreciate the applications of organo-metallic
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Surname Centre No. Initial(s) Paper Reference 4 3 3 5 Candidate No. 2 H Signature Paper Reference(s) 4335/2H Examiner’s use only London Examinations IGCSE Team Leader’s use only Chemistry Paper 2H Higher Tier Wednesday 17 June 2009 – Morning Time: 2 hours Materials required for examination Nil Items included with question papers Nil Question Leave Number Blank 1 2 3 4 5 6 7 8 9 Instructions to Candidates In the boxes above‚ write your centre number‚ candidate number‚ your surname
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