Used as a source of silica in a clay body recipe. Slightly coarser than Flint #395. Used in a high fire glaze to control running during its fluid state, due to its slightly larger particle size. Product name stated on the bag is Ottawa Silica Sil-Co-Sil #90. NOTE:This product does not ship to California.
WARNING: Contains free crystalline silica, which could lead to silicosis or other lung diseases after very long exposure. IRAC has classified crystalline silica as a carcinogen, based on evidence of carcinogenicity in experimental animals and limited evidence of carcinogenicity to humans. Wear a NIOSH approved respirator. For further information, contact: Rovin Ceramics at 734/424.3345