STEP 1: Dissolve 5.0 g of pure myristic acid (tetradecanoic acid) in 25 ml of absolute methanol to which 0.1 g of sodium has been added.
STEP 2: Place the solution in a cylindrical cell (25 cm long, 3 cm diameter) provided with two platinum plate electrodes (2.5 x 2.5 cm) set 1-2 mm apart.
STEP 3: Electrolyse at about 1 amp until the electrolyte is just alkaline (pH 7.5-8).
STEP 4: Cool the cell in an ice bath during the electrolysis.
STEP 5: Reverse the current from time to time; this will help to dislodge the coating of insoluble by-products on the electrodes.
STEP 6: Neutralise the cell contents by adding a few drops of glacial acetic acid, and evaporate most of the solvent under reduced pressure using a rotary evaporator.
STEP 7: Pour the residue into the water and extract the crude product with ether.
STEP 8: Wash the ethereal solution with dilute sodium hydroxide solution, dry (magnesium sulphate) and evaporate the solvent.
STEP 9: Recrystallise the residue from light petroleum (b.p. 40-60 °C).
STEP 10:The yield of hexacosane, m.p. 5758 °C is 2.4 g (65%).
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