Effect of rape seed oil quality on biodiesel composition

The methanolysis of rape seed oil catalyzed by KOH has been studied from the standpoint of the dependences of the acid value (neutralisation number) and concentration ofunreactedoil (as sum ofglycerides) in the final mixture of methyl esters of fatty acids of the oil (biodiesel) on the initial KOH concentration in methanol and on the acid value and water content of the used oil.