periodically removed to alleviate pressure. The test tube was then left on the test tube rack to allow the solvents to separate. It had separated with the ether phase on top and acetone phase on the bottom. To see what light was being reflected, the tube was taken to the projector and it was recorded that the light reflected was red. The ether phase was used to paint with a brush approx. one inch above the bottom of a six inch chromatography paper. This step was repeated time
cholesterol dibromide begins to crystallize. In this experiment, it took a while for the cholesterol dibromide to fully crystallize, so acetic acid was added as a precipitant. A wash solution is prepared which consisted of acetic acid and methyl tert-butyl ether to rinse the flask for the solid cholesterol dibromide that was stuck to the flask. Cholesterol dibromide was isolated by using the vacuum filtration technique. Before the cholesterol dibromide was vacuum filtered it was a solid sticky white
Abstract – Methyl trans-cinnamate is an ester that contributes to the aroma of strawberry. It can be synthesized by an acid-catalyzed Fischer esterification of a methanol and trans-cinnamic acid under reflux. The solution was extracted to obtain the organic product, and evaporated residual solvent The yield was 68%, but there is some conflicting data regarding the purity. The melting point, IR, GC-MS indicate a highly pure desired product whereas 1H NMR shows there are unreacted reagents still present
Aim The purpose of this lab was to separate a mixture of carboxylic acid (p- toluic acid), a phenol (p-tert-butylphenol) and a neutral compound (acetanilide) using solvent extraction. Introduction Solvent extraction is a process that separates compounds from a mixture by a solvent. It involves the transfer of compounds from one liquid solvent to another liquid solvent. The two solvents used in this process should be immiscible to each other for the separation of compounds leading to an organic
Introduction Methanol having a general formula CH3OH is the simplest alcohol in the alkyl-alcohol series. It is also known as “wood alcohol”, because it was first produced by destructive distillation of wood, having no colour, mild alcoholic order and water soluble properties. Its melting point is -97.60C and boiling point is 64.60C and having a density of 0.791g/cm3 at 200C. Flash point of methanol is 110C and its auto-ignition temperature is 4640C. It is highly inflammable but is having explosive