Higher molar ratios result in greater ester conversion in a shorter time. In the ethanolysis of peanut oil, a 6:1 molar ratio liberated significantly more glycerine than did a 3:1 molar ratio (Feuge and Grose, 1949). Rapeseed oil was methanolyzed using 1% NaOH or KOH (Nye and Southwell, 1983).They found that the molar ratio of 6:1 of methanol to oil gave the best conversion. When a large amount of free fatty acids was present in the oil, a molar ratio as high as 15:1 was needed under acid catalysis (Sprules and Price, 1950). Freedman et al. (1984)studied the effect of molar ratio (from 1:1 to 6:1) on ester conversion with vegetable oils. Soybean, sunflower, peanut and cotton seed oils behaved similarly and achieved highest conversions (93–98%) at a 6:1 molar ratio. Tanaka et al. (1981), in his novel two-step transesterification of oils and fats such as tallow, coconut oil and palm oil, used 6:1–30:1 molar ratios with alkali-catalysis to achieve a conversion of 99.5%.