The oleic acid, being liquid at ordinary temperature, together with some stearic and palmitic acid, is thus pressed out.
Likewise the melting point of stearic acid is lowered by the addition of a small amount of palmitic acid.
It is a combination of palmitic acid and a peculiar hydrocarbon, called (after the whale) "cetyl," and easily forms pure crystals.
palmitic acid pal·mit·ic acid (pāl-mĭt'ĭk, päl-, pä-mĭt'-)
A saturated fatty acid occurring in palm oil and other fats. Also called hexadecanoic acid.