Pure caffeine itself is a white, bitter, odorless crystalline solid, therefore, it is obvious that more than just caffeine is in the liquid tea solution since tea is a brown color. Because of this, dichloromethane is used to dissolve the caffeine that is in the tea, which leaves the other constituents in the aqueous layer. To a 250ml beaker containing 7 tea bags, add 100ml of boiling water. Allow the mixture to stand Brown aqueous solution for 5-7 minutes while steeping containing caffeine and the tea from the bags other impurities. The solvent layer is solutions and any emulsion yellow.
Petroleum ether is a poor and add a few drops solvent for the product.
According to the HPLC graph that follows, my product was very pure. As before, of course this experiment was not done completely error-free, the error is due almost entirely on human error.