The physicochemical parameters; Saponification value, Iodine value and Acid value of some selected Northern Nigerian industrial oils were determined. The following values were obtained for the various parameters measured; For Castor seed oil, Saponification value 123.3± 3.428 mgKOH/g, Iodine value 76.93 ± 0.397 g I2/100g and Acid value 2.39 ± 0.065 mgKOH/g were obtained. For Jatropha oil, Saponification value 122.49 ± 2.591 mgKOH/g, Iodine value 73.46 ± 5.00 g I2/100g and Acid value 1.20 ± 0.065 mgKOH/g were obtained. For Cotton seed oil, Saponification value 199.42 ± 0.53 mgKOH/g, Iodine value 119.78 ± 0.81 g I2/100g and Acid value 0.81 ± 0.01 mgKOH/g were obtained. The oil yield for Castor seed oil, Jatropha oil and Cotton seed oil were 42% , were 48% , were 48% respectively. The objective was to justify their industrial utilization.
