an Unknown Compound Purpose: The purpose of this experiment was to separate a mixture of two or more unknown compounds and identify them based on their melting point and reactivity with an acid or a base. Compound studied/Reactions: The organic solvent used in this experiment was methyl t-butyl ether (MTBE‚ 2-methoxy-2-methylpropane). The unknown that dissolved in the MTBE‚ but was insoluble in water. MBTE is very volatile and flammable. It was determined in the experiment that the unknown was an
Free Chemistry Solvent Laboratory glassware
“The Feasibility of Using the Shells of Durian Fruit (Durio zebethinus) extract as the main ingredient for a Deodorizer.” A topic proposal presented to Immaculate Conception Academy High School Department in partial fulfillment of the requirements of Research Submitted by: Michelle Cabral #6 Regine Cheng #9 Hanna Flores #16 Jamie Lazo #23 Phinney Siy #28 III-Justice December 14‚ 2006 Submitted to: Ms. Venessa Antonio Abstract The researchers’ study primarily aims to find
Premium Durian Solvent
Punjab Province of Pakistan. The branches and leaves of Callistemon citrinus was selected for sample preparation. Extract preparation: The extracts of Callistemon citrinus was prepared by grinding the sample into fine powder. Methanol was used as solvent for preparation of extracts. 20 grams of sample was dissolved in 200ml of methanol. After proper mixing‚ they were kept in
Premium Chemistry Ethanol Sodium hydroxide
Karina Lab performed: 1/22/15 Chem 2203-012 Report due: 1/29/15 TA: Kavitha Akula Experiment 4A: Determination of a Partition Coefficient for Benzoic Acid in Methylene Chloride and Water‚ and Experiment 4B: Solvent Extraction I: Acid-Base Extraction Using the System Benzoic Acid‚ Methylene Chloride‚ and Sodium Bicarbonate Solution Objective The purpose of this experiment is to familiarize oneself with the general procedures determining a partition coefficient
Premium Chemistry Solubility Solvent
A simple‚ precise‚ accurate and rapid High-Performance Thin Layer Chromatographic method has been developed and validated for the simultaneous estimation of of ellagic acid‚ chlorogenic acid‚ gallic acid and quercetin in the leaf extract of Terminalia tomentosa and its Formulation. The stationary phase used was precoated silica gel 60F254.The mobile phase used was a mixture of Butyl acetate: Formic Acid: Distilled Water 14:5:5 (v/v). The detection of spots were carried out at 254 nm. This HPTLC method
Premium Chemistry Solvent Acetic acid
homogenized‚ which was about 10 minutes. Next‚ 4- bromophenylacetic acid was added to the flask and the mixture was refluxed for about 50 minutes at about 80°C. TLC was used to monitor the reaction progress every 15 minutes. A relatively non-polar solvent system of 25% ethyl acetate/ 75% hexanes was used as the mobile phase. Each plate contained a starting material (4-bromophenylacetic acid)‚ a reaction mixture spot‚ and a co-spot. The TLC at 15 minutes showed the starting material to have an Rf of
Premium Oxygen Carbon Carbon dioxide
Background of the study Due to the overwhelming demand of plastic bag production and its effects on our environment‚ our landfills are crammed with these non-biodegradable materials. Substances used in the manufacturing brought forth various harmful chemicals which worsen over time. As the destructive compounds such as Chlorofluorocarbons were introduced‚ the complete deprivation of the Ozone Layer starts. However‚ scientists and nature preservers alike managed to overthrow this hazard‚ but not
Premium Plastic Polymer Starch
BCBT: As it can be seen in table 2‚ E. platyloba EO had a strong activity in maintenance of β-carotene molecules especially in C10 (78.25%)‚ which was higher than ascorbic acid and comparable with BHT. The same concentration of ascorbic acid and BHT were used as standard to compare the values. FRAP: The antioxidant efficiency of the E. platyloba EO using FRAP method was calculated with reference to the reaction formula ‚ given by a Fe+2 solution of known concentration. The same concentration of ascorbic
Premium Chemical reaction Enzyme Chemistry
an acid catalyzed reaction. The reaction took place in a separatory funnel designed to separate immiscible liquids. The crude product was extracted by transferring a solute from one solvent to another. The process of washing the solutions by phase transfer was used in order to remove impurities from the main solvent layer. Finally‚ the crude product was dried with anhydrous Calcium chloride and purified once more by simple distillation technique. Results and Discussion: Main reaction(s) and
Premium Ethanol Solvent Distillation
Santo Tomas España St.‚ 1015‚ Manila Abstract Caffeine is soluble in both water and organic solvents‚ solid-liquid extraction and liquid-liquid extraction were used in the experimentation process. Caffeine was extracted using hot water‚ however‚ due to its medium polarity; it was further separated from water soluble compounds using a polar non-protic solvent‚ dichloromethane (CH2Cl2). Sublimation was then used for the purification of the targeted compound. Based from the data
Premium Solubility Green tea Tea