Silica is commonly known as silicon dioxide. It is also sometimes called silicate anhydride or silicate. Silica/silica comes in various forms, depending on how it is manufactured, including Crystalline silica, usually obtained from mining quartz. Quartz makes up a large percentage of the Earth's crust, so this product is widely used. This is not the form used in food and can be problematic when inhaled for long periods. Amorphous silica is found in sediments and rocks on Earth. This also forms diatomaceous Earth, diatom silica, or diatomaceous Earth, made from sediment that accumulates over time in the sediments of rivers, streams, lakes, and oceans. It is commonly used as an anti-caking agent to keep powdered food types flowing freely and prevent moisture absorption. Colloidal silica is used in tablet manufacture. This type is found in supplements because of its anti-caking, adsorbent, disintegrant, and flow-aid effects. Synthetic amorphous silica is the most commonly used type of food additive. It is usually manufactured by hydrolysis in the gas phase. Which foods contain silica? You will find it added to foods such as flour and protein powder in small amounts. If you are looking for high quality, high purity and cost-effective silica, or if you require the latest price of silica, please feel free to email contact mis-asia.