![]() ![]() PQ’s ability to tightly control particle size distribution differentiates us from competitors and provides a high-quality, consistent product. Sodium silicate is reacted with acid, normally sulfuric acid, then it is washed, dried, milled to desired particle size and packaged for delivery. PQ produces both hydrogel (higher moisture content) and xerogel (low moistureĬontent). If tiny crystals of silica are inhaled, they can damage and irritate the. silica silica gel, a highly porous, noncrystalline form of silica used to remove moisture from gases and liquids, to thicken liquids, to impart a dull surface to paints and synthetic films, and for other purposes. However, silica is hazardous in finely-grained crystalline forms. Silica Gel Silica Gel have a tightly controlled pore size distribution, high surface areas and pore volumes ranging from low to ultra-high. Silica is non-toxic and can be consumed by humans. In its final form, silica looks like a fine white powder. Liquid sodium silicate is neutralized with an acid to produce silica. PQ produces precipitated silica and silica gel. Depending on the manufacturing method, there are different forms of synthetic silica fumed, colloidal, precipitated and silica gel.Įach form has its own advantages ranging from pore size, surface area, moistureĪbsorption and cost. Synthetic silica can be used as a matting agent, free flow agent, carrier, anti-caking aid, defoamer, rheology modifier, polishing agent and as an abrasive. Silica Silica – Molecular formula SiO 2 – is a synthetic and amorphous form of silicon dioxide. Our liquid sodium silicate is the core building block for PQ’s derivate products that include silicas and zeolites. A few foods that have a higher absorbable silica content are: Green Beans: 6.19mg in 250g High-bran cereal: 10.17mg in 100g Whole grain bread: 4.50mg in 200g Raisins: 8.25mg in 100g Beer: 8.25mg in 12 oz. PQ provides silicate in various forms including solid glass, hydrous powders and ready-for-use liquids. So although some foods, such as bananas, have a high silica content, it is not easily absorbed in the body. Most often liquid silicates are utilized due to easier handling in the end application. Silicate products are selected based on the end application. Silicon dioxide, also known as silica, is a chemical compound commonly used in food as an anti-caking agent or in cosmetics to prevent corrosion, according to the USDA. ![]() The ratio of SiO 2 to Na 2O impacts many properties of silicate such as solubility, drying rates and physical properties such as viscosity and density. ![]() This process creates lower ratio silicates (<2.4) and requires less heat. HYDROTHERMAL PROCESS Silica sand is dissolved in sodium hydroxide solution. Glass briquettes (also lumps) are produced that can be sold as is or dissolved in water to produce sodium silicate solutions. This process allows for ratios of silica (SiO 2) to Na 2O from 2.0 to 3.4. Sodium silicate is made in two primary ways.įURNACE PROCESS Silicon dioxide (silica sand) is fused with sodium carbonate (soda ash) in a furnace. Sodium Silicate – Molecular formula nSiO 2:Na 2O – is a versatile product that can be used to adhere, buffer pH, agglomerate, immobilize, coat and disperse. ![]()
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