Silicon Dioxide
Silica
- CAS
- 7631-86-9
- EC
- 231-545-4
Silicon dioxide, also known as silica, is a white amorphous powder with formula SiO2, molecular weight 60.08 g/mol, density 2.2 g/cm³. Insoluble in water, high melting point 1710°C; occurs naturally or synthetically produced.
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Silicon Dioxide
Applications
Used as anti-caking agent in food, filler in pharmaceuticals, adsorbent in cosmetics, and in paints, rubber, and electronics for reinforcement; also in water filtration and chromatography.
Safety & Risks
May cause silicosis from chronic inhalation; irritates eyes and skin. California Prop 65 cancer warning; avoid dust formation. Stable but releases silicon oxides in fires; Hazard Class varies.
Packaging
In 25kg bags; store dry; dispose in sanitary landfills or incinerate with scrubbing.