EVONIK CORPORATION › SIPERNAT® 880 SIPERNAT® 880 $0.00 SIPERNAT® 880 is a calcium silicate which is used as a flow and anticaking agent in many applications. Quantity: Add To Cart Added! SIPERNAT® 880 is a calcium silicate which is used as a flow and anticaking agent in many applications. You Might Also Like SIPERNAT® 28 SIPERNAT® 350 SIPERNAT® D 13 SIPERNAT® 35 SIPERNAT® D 17/2