Colloidal Silica Quick enquiry Where to buy Geo40 produces low-carbon, geothermally derived colloidal silica for many industrial applications. Uses: Catalyst manufacture, construction admixtures, precision investment casting, refractory applications, paints and coatings, concrete additives and sealers, pulp and paper, civil applications, rubber & latex & oil and gas. Group: Silica . Alternative Names: Silica , silica te, silicon dioxide. Grades: 6-14 nanometre particle size, 10-40% solids content. CAS No. 7631-86-9. Pack Sizes: Drums, IBC's, Flexitanks. Molecular formula: Geo40 can tailor our products to meet customer requirements, such as particle size and distribution. Mole weight: We can adjust trace mineral content or the stabilising ions of our colloidal silica . We have specialist processes such as deionisation, purification and filtering options. Categories: SILICON DIOXIDE, Dioxosilane, Quartz, Silica gel, Cristobalite, Tridymite, Silicic anhydride, Sand, KIESELGUHR, Aerosil, Diatomaceous silica , Hexagonal pore morphology, Silicon dioxide, nanopowder (spherical, porous), Siliziumdioxid, Aerogel, Silica vitreous. Taupo, New Zealand