Solvent

by drawing an origin line and solvent front line with a pencil. Three spot were labeled A, B, and C. A sample of each standard was spotted on the analytical TLC plate approximately 1cm from the bottom of the plate. It was then enclosed in a jar filled with 2ml of 95% ethyl acetate- 5% acetic acid. (Another laboratory group conducted the same procedure but using 1:1 Hexanes: Ethyl Acetate as the developing solvent). After the TLC plate was developed until the solvent reached 1cm at its top; the…

ingredients in a sharpie.Did you know that 1-Propanol “is formed naturally in small amounts during many fermentation processes and used as a solvent in the pharmaceutical industry mainly for resins and cellulose esters”.(wikipedia).Did you also know that” Propyl alcohol is a colorless liquid and is made by oxidation of aliphatic hydrocarbons that is used as a solvent and chemical intermediate’’.(Pubchem). Butyl alcohol also called butanol(Wikipedia) is another ingredient in the sharpie…

In pursuit of our continued interest in the development of solvent-free and green synthetic procedures, we decided to explore the use of tartaric acid catalyst for synthesis of polysubstituted quinolines via Friedlander condensation in high to excellent yields at 70 °C under solvent-free conditions. Initially the reaction between 2-aminobenzophenone (1.0 mmol) and dimedone (1.0 mmol), as the model reaction was examined in the presence varying amount of tartaric acid as catalyst and the results…

ammonium sulfate. Ovalbumin is the major protein of egg white and is fractionated by means of ammonium sulfate precipitation. The properties of the solvent system will dissolve the protein and greatly impact solubility. In total, there are four major factors that affect protein solubility: ionic strength, pH, temperature, and dielectric constant of solvents and these are extremely useful in the field of biochemistry as well as for this experiment. Ionic strength is where protein solubility is…

Introduction A technique called extraction will be demonstrated in this experiment. Extraction relies on the solubility of substances into solvents and the insolubility of the solvents into each other. In this experiment, three organic compounds (aspirin and naphthalene) will be separated from each other. The two compounds are all soluble in ethyl ether (an organic solvent). By selectively reacting each organic compound, we can make it soluble in water and insoluble in ethyl ether. Since ethyl…

1-Octadecene (45 mL) was injected as a noncoordinating solvent into the flask at 150 °C and heated to 310 °C under N2 environment, yielding a clear solution of Cd(OA)2 and Zn(OA)2. At the elevated temperature of 300 °C, 0.6 mmol of Se and 12 mmol of S dissolved in 12 mL trioctylphosphine (TOP) was injected into…

result indicates that ortho-toluic acid dissolved more into the organic phase (dichloromethane) than in the aqueous phase (water). The methyl-phenyl group is water hating (hydrophobic) and because of this would tend to dissolve in another hydrophobic solvent. This follows the results found since more dissolved in the dichloromethane. This follows the adage “like dissolves like.” The dipole interaction between the two (dichloromethane and o-toluic acid would help to cause the dissolution. There…

CHAPTER 2 LITERATURE REVIEW 2.1 Synthesis of Schiff base Method preparation for Schiff base ligand is a straight forward synthesis and easily modified using different amines and carbonyl compound. This could be one of the reasons that make Schiff base ligand popular in coordination chemistry research. Synthesis of Schiff base ligand commonly, taking place in alcohol through condensation reaction of amines and carbonyl compound. The acid/base catalysis or heating is employed in the synthesis…

electrons are shared unequally. The unequal distribution causes the oxygen atom to have a negative pole and the two hydrogen atoms have a positive pole. The polarity of water makes it unique and allows it to perform as a solvent (Duke University, n.d.). Since water is a solvent, most material found in saltwater is dissolved. The most present ions are: sodium, chloride, bromine, and different…

Analgesic drugs contain an active pharmaceutical ingredient (API) that provides it with the pharmacological properties. Active pharmaceutical ingredients consist of acetylsalicylic acid, acetaminophen, ibuprofen, or naproxen. These ingredients are also Nonsteroidal Anti-inflammatory Drugs (NSAIDs) that are non-narcotic relievers of mild to moderate pain (Medicinenet). The purpose of this experiment was to separate an active pharmaceutical ingredient from an analgesic drug using extraction with…