Today they’re many thousand different materials. Most of them are different types of clothing‚ or cloth. Good portions of these are combinations of synthetic fibers woven or threaded together to make a final product. These synthetic fibers are a large group of polymers. Synthetic polymers offer more possibilities‚ since they can be designed with molecular structures that impart properties for desired end uses. All fibers are ploy-something or polymers. That means they are long strings of repeating
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LABORATORY REPORT DETAIL TITLE: Foreign Materials in Food products DATE: September 10‚ 2013 DATE OF SUBMISSION: September 22nd‚ 2013 SUBJECT: Processing Operations Objective: To carry out the evaluation of the foreign materials in given vegetable sample i.e. Broccoli using Wildman method for evaluating insects as well as aphids and thrip. Abstract: The lab objectives include determination of the heavy filth and light filth from the frozen
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stirred tank reactor for the saponification of ethyl acetate with dilute sodium hydroxide. To determine the effect of temperature on reaction rate constant. To find the values of rate constant and Arrhenius parameters. Equipment used Arm field batch stirred tank reactor A stop clock A conductivity meter Water bath (tank) with a thermostat Funnel A heat controller Two flasks of one litre each and Stock solutions (0.1M sodium hydroxide and 0.1M ethyl acetate). The key results obtained include Table showing
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were able to get through most of it‚ and were only missing the adulterant. The first step to identify our unknown samples was to create TLC plates that should results with each known compound and 95% hexane: 5% ethyl acetate‚ 90% hexane: 10% ethyl acetate‚ or 80% hexane: 20% ethyl acetate. Each student was designated one of these concentrations of solvent as well as visualization method. After we tested and calculated the Rf values of each of the following known compounds with each concentration: anise
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requirements. PEP Process Module 2 19 Aug 1999 SRI Consulting About This Process Current global capacity for acetic acid exceeds 6.4 million t/yr. Downstream applications for the acid are primarily as a precursor for vinyl acetate monomer synthesis‚ for acetic anhydride production‚ and as a solvent in purified terephthalic acid production. Methanol carbonylation to produce acetic acid using a homogeneous Rh catalyst accounts for more than 55% of global capacity‚
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Chromatography (TLC) Plating: This is a common method that is used to monitor the progress of a reaction and determine when it is complete. In our chromatography there was a stationary phase/adsorbant of Silica gel and we used mobile phases of ethyl acetate‚ hexanes‚ and a 2:8 mix of both. During the process‚ the mobile phase passes over the compound spots at the bottom and drags them up the adsorbant. The resulting spots where the compounds stop can be used to measure their polarity and solubility in
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Copper Complex 1. Place 10mL of N‚N-dimethylformamide (DMF) in a 25mL Erlenmeyer flask with boiling chips and heat on hotplate until slight boil. 2. Add 100 mg (0.16 mmol) TPP to the hot DMF‚ and dissolve 3. Add ~40 mg (0.20 mmol) of Copper (II) acetate‚ continue to heat at reflux for 5 min.
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[52503-64-7]. Acetic acid was also well known to alchemists of the Renaissance. Andreas Libavius (AD 1540–1600) distinguished the properties of vinegar from those of icelike (glacial) acetic acid obtained by dry distillation of copper acetate or similar heavy metal acetates. Numerous attempts to prepare glacial acetic acid by distillation of vinegar proved to be in vain‚ however. Lavoisier believed he could distinguish acetic acid from acetous acid‚ the hypothetical acid of vinegar‚ which he thought was
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THE HIGHFIELD LEVEL 3 Health & Safety TRAINING PACK Lecture programme designed and written by Kirstie Trasler and Ian Fisher Disclaimer The information provided in this training package has been carefully compiled to ensure its relevance and accuracy. However‚ no liability or legal responsibility is accepted for the content or any errors or omissions. ©Highfield.co.uk Ltd Apart from any fair dealing for the purpose of private study or the purpose permitted under the UK Copyright‚ Designs
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Carboxylic Acids and Their Derivatives Ma. Marielle M. Medura Prof. Emma Boncales Chem 23A (TTH 01:00-4:00 p.m) Carboxylic Acids and Their Derivatives I. Introduction Carboxylic acids is an organic compound that contains a carboxylic group(-COOH). Its general formula is R-C=OOH with R referring to the rest of the molecule such as H and C. They are directly attached to a carbonyl group and the interaction between them affects the reactions of each. The polarity of the O-H bond
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