12-Hydroxy Stearic Acid (12-HSA): A Highly Adaptable Asset for Various Uses Envision a wax-like fatty acid derived from castor oil, harboring a concealed hydroxyl group that holds the key to unlocking a multitude of possibilities. This is precisely what 12-HSA offers â?? a versatile champion within the realm of industrial chemicals. Distinguishing itself from its stearic acid counterpart, 12-HSA possesses a unique structure that empowers it to excel across a wide range of applications.