Solvent

(TETA). All the synthesized aminocellulose tosylates were soluble in water, and their transparent films formed complexes with Cu2+ ions, and used to immobilize glucose oxidase enzyme86, scheme 34. Liu et al. studied the effect of temperature and solvent on the nucleophilic substitution reactions of tosyl cellulose by butylamine and pyridine. The reactions were conducted at different temperatures (25, 50, 75 and 100 oC). The highest regioselective substitution at C-6 was achieved at 25 and 50…

Purpose: The experiment focused on isolating terpenes from citrus peels using supercritical carbon dioxide liquid phase. The experiment also focused to identify/ quantify organic compounds using IR and gas chromatography. Experimental: The experiment procedure can be found in the Organic Chemistry Manual in chapter 6.2 pages 6.11-6.21 and also in Appendix D: experimental records Results and Discussion: Part A: All the lemon peel date was obtained from my lab partner Irini Petros as cited in…

CAUTION: It is best not to get dichloromethane on your skin. Gloves are to be worn during this experiment, if improper safety precautions are taken there is a possibility of irritation, and or burning of the skin. CAUTION: Gas will build up in the separatory funnel while you are shaking it, so you must vent the funnel occasionally to prevent the stopper from popping out, causing a mess and possibly getting dichloromethane on your skin. ~During the pre-phase of this experiment it is…

Abstract: Chemiluminescence is an essential topic in the study of chemistry. The reaction involves mixing two chemicals were to form an excited (high-energy) intermediate that releases energy as light. This experiment first synthesized luminol by reducing 5-nitro-2,3-dihyodropthlazine-1,4-dione, using sodium hydrosulfite (Na2S2O4) and 3M sodium hydroxide (NaOH). The amount of luminol collected was 0.2693 g with the percent yield of 161%. The product of the first reaction was then used to…

N-Vinyl pyrrolidone (NVP) and its copolymers attracting much attention and have been widely investigated for applications in different field due to its low toxicity, biocompatibility and good film forming (Hemalatha et al. 2014; Anasuya; Lee et al. 2007). The amide group in NVP is highly polar, which confirms it’s hydrophilic. NVP has been copolymerized with various monomers because the amide group has high affinity for many large and small molecules that are known to be good hydrogen-bond…

Remove the magnesium sulfate by gravity filtration through filter paper. 5. Filter into a pre-weighed 50 ml round bottom flask and remove the solvent through low-pressure evaporation. As the methylene chloride evaporates, the flask will get cold. It may help speed the process to have a large dish or bowl filled with room temperature warm water to keep the flask from getting too cold. 6. Weigh…

Eagle’s medium (DMEM), fetal bovine serum, TrypLETM, TRIzol reagent, and cDNA Reverse Transcription kit were purchased from Life Technologies ( Grand Island, NY). Penicillin and streptomycin were obtained from Fisher Scientific (Atlanta, GA). All other solvents and chemicals used in this investigation were obtained from VWR International (Suwanee, GA). Plant Material: Leaves from A. mearnsii, were obtained from Guangxi Huangmian State-owned Forest Farm (Guangxi, China). Air-dried leaves were…

RESULTS SOLUBILITY ANALYSIS: Ketoprofen sample was found to be soluble in ethanol, Chloroform, ether, acetone at neutral pH and is found to be almost insoluble in water. Solubility analysis is important because the drug has to dissolve in the solvents and also in the dissolution medium used. MELTING POINT DETERMINATION: The melting point of the Ketoprofen was found to be 96˚C by open capillary tube using microcontroller based melting point apparatus which is within the reported range of 94˚C…

The previous lab that was conducted dealt with oxidation, which is referred to as a compound gaining oxygen or losing electrons (Wyman, 2015). This week’s lab consisted of a reaction that was the opposite of an oxidation and it is known as a reduction reaction. To be more specific a reduction reaction is when the reactant that is present gains electrons, which is response lowers the overall formal charge of the compound. For instance, if there are two hydrogen ions and each one has a positive…

The researchers compared both biologically produced manganese oxides and chemically produced manganese oxides for the oxidation of diclofenac. Because biologically produced manganese oxides are known to have high specific surface areas and high catalytic reactivity, this substance offers higher rates of oxidation for diclofenac when compared to chemically produced manganese oxides.² If biologically produced manganese oxides prove to completely eliminate diclofenac from the water supply, the…