Castor wax 3501420 218810292 2008-06-12T07:46:28Z 117.99.58.96 {{Expand|date=September 2007}} '''Castor wax''', also called [[hydrogenated]] [[castor oil]], is a hard, brittle, vegetable [[wax]]. It is produced by the [[hydrogenation]] (chemical combination with hydrogen) of pure [[castor oil]], in the presence of a [[nickel]] [[catalyst]]. It is odorless and insoluble in water. ==Uses== Castor wax is used in polishes, [[cosmetics]], electrical [[capacitors]], carbon paper, [[lubrication]], and coatings and greases where resistance to moisture, [[oils]] and other [[petrochemical]] products is required. Castor wax is also useful in polyurethane coating formulation, as it contains three secondary hydroxyl group.These coating compositions are useful as a top coat varnish for leather,wood & rubber. ==Properties== * [[Melting point]] = 61-69 C * [[Acid number]] = 2 * [[Saponification value]] = 179 * [[Iodine number]] = 4 ==References== {{reflist}} [[Category:Waxes]]