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Fumed Silica (SiO₂)

Fumed Silica, also known as pyrogenic silica, are powders that are available with either hydrophobic or hydrophilic surfaces. They are made with a flame, resulting in an extremely small particle with a three-dimensional structure with low bulk density and high surface area, making this powder useful as a thickener or reinforcing filler.
Typical Applications

Fumed silica powder is used in laminating and gel coat applications. It is also used in the food industry as a thickening and anticaking agent. It is also used as a desiccant in toothpaste (light abrasive) and cosmetics. Fumed silica also has applications as a filler in paints, printing inks, resins, and adhesives. Various other applications are rheological control, flow agent, thickening agent, reinforcing agent in: adhesives and/or sealants, silicone elastomer, rubber products, suspension, paints, dispersion

Packaging Options

Multi-ply paper bags, drums or super sacks

Classification

Fumed Silica TSCA (SARA Title III) Status: Listed- No
Carcinogenicity: Not listed as a carcinogen By IARC, NTP, Z list or OSHA
Fumed Silica (Specific) CAS Number: 112945-52-5
Fumed Silica (General) CAS Number:7631-86-9
Fumed Silica RTECS Number: VV310000

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  • Hydrophilic (Untreated) Fumed Silica Powder
  • Hydrophobic (Treated) Fumed Silica Powder

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