Commercial grade castor oil is one of the standard & most common grades of castor oil, used for many industrial applications. It is also known as the industrial grade castor oil. It is obtained from the seeds of Ricinus Communis & have pale yellow color, viscous, oily liquid insoluble in water. It contains more than 87% of a unique hydroxy fatty acid viz.Ricinoleic acid.
Industrial or commercial grade castor oil is obtained from a mixture of the first pressing and second phase of production – solvent extraction. It can act as a substrate for the preparation of other grades of castor oil including DCO, FSG castor oil, Turkey red oil and Pale pressed castor oil etc.
|Appearance||Pale Dark Yellow|
|Colour in Lovibond 1” Cell||30 units max. (regular)|
|Expressed As (y+5r)||20 Unit Max (special)|
|Iodine Value||82 – 90|
|Saponification Value||177 – 187|
|Hydroxyl Value||160 min.mgKOH/g|
|Acid Value||2.0 max.|
|Moisture, impurities & volatile matter||0.50% max.|
|Free Fatty Acid (FFA)||2.00 % Max.|
|Specific Gravity @30 Deg C/30 Deg C||0.954 – 0.967|
|Refractive index @ 40ºC||1.477 to 1.481|
|Unsaponifiable matter||1% Max.|
|Viscosity @ 20 Deg C||950 Cp|
|Acetyle value||140 Min|