The saponification value is determined by taking 1.0 g of oil
sample in a conical flask to which is added 15 mL 1 N KOH
and 10 mL of distilled water and heated under a reserved condenser
for 30–40 min to ensure that the sample was fully dissolved.
After this sample was cooled, phenolphthalein was
added and titrated with 0.5 M of HCl until a pink endpoint
was reached. A blank was determined with the same time
conditions.