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/ risk factors description / application the chemical compound silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula sio . it has been known for its hardness since antiquity. silica is most commonly found in nature as sand or quartz , as well as in the cell walls of
diatoms. silica is manufactured in several forms including fused quartz , crystal, fumed silica, colloidal silica, silica gel, and aerogel. silica is used primarily in the production of glass for windows, drinking glasses, beverage bottles, and many other uses. the majority of optical fibres for telecommunications...
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