unknown drug. The identity of the drug was determined through melting point‚ percent recover‚ and Rf values. The comparable data for acetaminophen from the manufacturer is 500mg of active ingredient. After conducting the experiment-extraction‚ distillation‚ and evaporation- 451mg of active ingredient. This relates to a 68.1% recovery. The melting point was between 158 and 165 degrees Celsius‚ which is almost ten degrees lower than the published melting point of acetaminophen. After conducting a TLC
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place the separating funnel back on the ring stand and let the two layers separate. f. Drain the bottom layer into a conical flask because now the caffeine is extracted into the dichloromethane layer. Cover the mouth of the conical flask to avoid evaporation of the solution. 9 Dry the combined dichloromethane solutions using drying agent - anhydrous Sodium sulfite. Add 1 teaspoon to the solutions until it no longer clumps together at the bottom of the flask. Mix well and leave it for 10 minutes. 10
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Sasha Thiel 09.10.2012 CH203 Lab Experiment 1: Isolation of the Active Ingredient in an Analgesic Drug Pre-Lab: A. Least accurate to most accurate 1. Beakers (5ml markings) 2. 10ml graduated cylinder (0.1 markings) 3. 5ml vials (0.1 and 0.3 markings) 4. 1ml plastic pipets (0.1 ml markings) 5. 1ml syringes (0.1 ml markings) 6. 1ml graduated volumetric pipets (0.01 ml markings) B. A 1ml graduated volumetric pipet is the best to use if you want 0.15 ml of reactant
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Atmospheric Pollution Yvonne Perry Everest Online Atmospheric Pollution There are both primary and secondary air pollutants. The primary pollutants “Are the direct products of combustion and evaporation‚” (Wright‚ 2011) and some can undergo further reactions in the atmosphere and causing secondary pollutants. The names of the primary pollutants are: Suspended particulate matter‚ volatile organic compounds‚ carbon monoxide‚ nitrogen oxides‚ sulfur dioxide‚ lead‚ air toxics‚ and radon. Suspended
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distillation apparatus. Steam Distillation 1.) Turn on the cooling water in the condenser‚ begin stirring and heating 2.) Collect 1 drop of liquid every 2–5 seconds. 3.) Continue distillation until at least 5 mL of distillate has been collected. Extraction of the Essential Oil 1.) Transfer the distillate to a 15-mL screw-cap centrifuge tube and add 1.0 mL of methylene chloride 2.) Cap the tube securely and shake it vigorously‚ venting frequently 3.) Allow the layers to separate 4.) If the layers do
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1. History The invention of epoxy resin has undergone a long period of time. As early as 1891‚ the German Lindmann hydroquinone and epichlorohydrin with the reaction of condensation into the resin and make use of anhydride curing. But its value has not been revealed. Epoxy plastic has its roots far back in history‚ to be specific‚ in 1936‚ when Dr. Pierre Castan in Switzerland succeeded in synthesizing an epoxy resin that he hardened with pthalic acid anhydride. Dr. Castan’s work was licensed
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steam forced through the plant material vaporizes the essential oil which is then condenses into a receiver along with water from the condensed steam. Clove oil was separated from the distillate by extraction with dichloromethane‚ and its major component was then separated from minor components by extraction with aqueous sodium hydroxide. The major component of clove oil was a strong-smelling liquid that has the molecular formula C10H12O2. Below are some of the possible structures for the component
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Optimization of extraction of lycopene for production of lyco-cookies Short running title : PRODUCTION OF LYCO-COOKIES Keywords : antioxidant‚ carotenoids‚ n-hexane‚ cookies‚ supplement Meena Vankudre*‚ Vina D. L. Putra and Vaibhav Zamare Department of Biotechnology‚ Sinhgad College of Science‚ Affiliated to University of Pune‚ Ambegaon (BK)‚ Pune 411041‚ India *Author for correspondence e-mail : meenahv@gmail.com Abstract In today’s world‚ people tend to be exposed to unhealthy
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biomass of seaweeds such as Kappaphycus alvarezii that can be crushed to release sap and where the sap is useful as a potent liquid fertilizer after suitable treatment with additives and dilution while the residue is a superior raw material for extraction of κ-carrageenan‚ thereby enhancing the value of the seaweed. Other advantages of the invention include a reduced drying time and drying area to obtain the raw material for κ-carrageenan production in dry and storable form‚ a reduced cost of transporting
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Term 1 - Summative Assessment Science (Theory) Question Paper Set - 1 Time: 3 to 3 ½ hours Max. Marks: 80 Instructions: 1. The question paper consists of two sections‚ A and B. You are to attempt both the sections. 2. All questions are compulsory. 3. There is no overall choice. However‚ internal choice has been provided in all the three questions of five marks each. You have to attempt only one option in each question. 4. All questions in Section A and all questions in Section B are to
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