EVONIK CORPORATION › SIPERNAT® 22 S SIPERNAT® 22 S $0.00 SIPERNAT® 22 S is a silica with a high absorption capacity. It is used as a flow and anticaking agent. Add To Cart Added! SIPERNAT® 22 S is a silica with a high absorption capacity. It is used as a flow and anticaking agent. You Might Also Like SIPERNAT® D 17/2 SIPERNAT® D 13 SIPERNAT® 35 SIPERNAT® 880 SIPERNAT® 350