1) commercial castor oil Commercial grade castor oil is one of the most common grades of castor oil, used for many industrial applications. It is also known as the industrial grade castor oil. 2) b.S.S.(f.S.G.) grade castor oil Castor oil fsg is used in lubricants, paints, pharmaceuticals, cable insulators, sealants, inks, rubber and textiles etc. 3) pp grade castor oil Pale pressed grade castor oil is a form of castor oil that is characteristically clear and free from suspended matter. It is light in color and low in acidity, it is obtained from the first pressing of the castor seed. 4) doc (de oil castor cake) Castor de-oiled cake is obtained from castor cake after the multistage solvent extraction. It contains proteins and carbohydrates, essential amino acids, potash minerals, nitrogen and organic matter. De-oiled castor cakes are excellent product used for fertilizers.