Castor Wax Flakes is commonly referred to as hydrogenated castor oil. This vegetable wax comes in a white flake form and has a melting point of 85-88 degrees Celsius. Castor wax flakes can be heated beyond this range to create a liquid and the material will re-harden once the temperature cools. Castor wax flakes are produced through the chemical combination of hydrogen and pure castor oil. It is an odorless wax-like substance that is insoluble in water.