Diethyl ether

then decanted. After weighing a centrifuge tube, add 10ml of ethanol to the suspension in the tube. 2ml of ethanol washings in the beaker were transferred to the centrifuge tube. Centrifugation was carried out once for ethanol and twice more for diethyl ether. Centrifuge tube was then placed into a 60oC water bath for 15 minutes. The mass of purified CuI was weighed and recorded. Part 4 40mg of purified CuI was weighed and was added into a solution of 6ml of 5M of NH4OH and 200ml of water.…

Materials and Methods Chemicals and kits Chemicals: CCL4 dissolved in corn oil at 1: 1 percent was injected intraperitonealy at a dose of 1.2 ml/ kg of body weight 3 times a week. Kites: Diagnostic kits for serum total proteins, albumin, total lipid, triglyceride, total cholesterol, HDL-c, LDL-c, VLDL-c, alanine aminotransferase (ALT) and aspartate amino transferase (AST), alkaline phosphatase (ALP), blood urea nitrogen (BUN), uric acid and creatinine were purchased from ELIPSE, United…

complex process, consisting of six steps as depicted in Fig. 3. Step 1 the synthesis of 6-Trifluoromethyl-pyridine-2-carboxylic acid (2) from the starting material 2-trifluoromethyl-pyridine (1), dropwise addition into a reaction vessel containing diethyl ether, hexane, to which n- butyl lithium and dimethylaminoethanol was previously added dropwise under nitrogen atmosphere. The reaction mixture obtained is adjusted to pH with HCl and washed with…

CHAPTER 3 3.0 Introduction To establish the differences in consumer acceptance, the pork liver polony sample was compared against the Colcom standard polony. Experiments were conducted by manipulating the independent variable, adding pork liver in two of the polony treatments, and observing differences between the test samples and the control sample. Analyses were used to quantify and describe the differences in shelf life, sensory evaluation scores, microbiological analysis and proximate…

The reaction flask was covered with an aluminum foil and left stirring at high rate of speed for 24 h. At the end of the reaction, the dark powder was aggregated at the bottom of the flask. The collected powder was washed with bi-solvent of ethyl ether and distilled water-DI (10 mL each), followed by washing step with 10% HCl, saturated aqueous…

Preparation of coating solutions Chitosan solution was prepared with 2 % (w/v) chitosan in 1% (v/v) acetic acid glacial. The solution was placed on a hot plate/magnetic stirrer for 6 h. The resultant chitosan-based coating solution was filtrated, through a Whatman filter paper No: 2, glycerol was added at 0.75 % (w/v), and stirred for more than 15 minutes. Two of the best concentrations, 60 and 90 mg mL−1 were prepared from freeze-dried IgY for S. putrefaciens and P. fluorescens respectively.…

For the next two weeks, the objective of this lab is to explore EAS reactions. These reactions are possible spots on a benzene ring for substituting electrophiles due to compounds that are already on the ring. There are three types of directing substituents. The first one is a para-director which guides the second substituent on the opposite side of the benzene ring. The second director, which corresponds with para-directors, is the ortho-director. These directors place the group of atoms on the…

Title: Methylcobaloxime: A Model for Vitamin B12 Aim: To create methyl(pyridine)cobaloxime(III) as a model for methylCobalamin, the methylated form of vitamin B12, Introduction: Using Co(I)Cl2 as a starting material, it is possible to produce a cyano(pyridine)cobaloxime like compound, Chloro(pyridine)cobaloxime whose chemistry can be investigated via means of methylation, as such using the Chloro(pyridine)cobaloxime as a model for replicating chemistry already known of…

Results/Discussion: 2-butanol and Acetic Acid were refluxed together with anti-bumping granules and a catalyst of sulphuric acid for 1 hour and five minutes. Anti-bumping granules are small ceramic granules which have rough edges. They are added within a mixture to encourage smooth boiling. In this experiment by adding the anti-bumping granules we were able to achieve smooth boiling throughout both the reflux process and the distillation process. Without adding these granules, bubbles of vapour…

NRE- 155 Course Title: Environmental Law and Policy Course Coordinator: Mr. M V Shiju Documentary review- GASLAND Directed by-JOSH FOX United States of America, the superpower is stated as an example whenever we discuss how governance should play its role in people’s welfare. Gasland is an outcome of the letter Josh Fox received by a natural gas company to drill in his backyard. This documentary can be an eye opener or a setback for all those who think that it’s just the developing…