Composition: Silicic Acid 100% CAS Number: 1343-98-2 Density: 2.1 Chemical Formula: H2O3Si Molecular Weight: 0 g/mol Mesh: 4-10 Mesh Color: Blue solid Physical State: Solid Solubility Information: Insoluble Shelf Life: 60 Months Storage: Ambient DOT: NOT REGULATED.