EVONIK CORPORATION › SIPERNAT® 320 DS SIPERNAT® 320 DS $0.00 SIPERNAT® 320 DS is a very finely ground silica with good thickening and excellent flow improving properties. Add To Cart Added! SIPERNAT® 320 DS is a very finely ground silica with good thickening and excellent flow improving properties. You Might Also Like SIPERNAT® 50 SIPERNAT® 28 SIPERNAT® 22 SIPERNAT® 35 SIPERNAT® 820 A
