Rhodia Silica Systems : use of silica, HDS silica, amorphous silica, ...
Silica, or silicon dioxide, SiO2, in its pure form is
colorless to white. Silica is widely and abundantly distributed throughout
the earth, both in the pure state and in silicates, (e.g., in quartz,
agate, amethyst, chalcedony, flint, jasper, onyx and rock crystal), opal,
sand, sandstone, clay, granite and many other rocks. Silica occurs in
several forms and is involuable in water, slightly soluble in alkalies
and soluble in dilute hydrofluoric acid.
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The range of silica :
Crystalline silicon dioxide, Non-Crystalline, Fumed silica, precipitated
silica, silica gel, Colloidal silica.
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The use of silica :
Tire & Rubber Goods (Manufactured Rubber Goods & Tire)
Polymer Performance (Organic Rubber For Footwear, Plastics and TPE, Polymer
for Membranes
Silicone Elastomers), Nutritions & Industrial (Specialties, Nutritions,
Industrial Specialties), Performance Silicas (Dentifrice)
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The manufacturing process :
Precipitated silicas are produced by chemical reactions and precipitation,
which is achieved by neutralizing a solution of sodium silicate with an
acid, often sulfuric acid.The by-product, sodium sulfate, is eliminated
via filtration. The remaining silica is then dried and formed based on
its final application. The precipitation stage determined the microscopic
particle morphology for most of the silica's application properties.
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Contact your silica specialist
On Rhodia-silica.com, find content about :
amorphous silica, silica applications, silica products, silica range,
silica functions, silica markets, performance Silica, Silica expertise,
highly dispersible silicas, HDS silica, Dispersible Silicas, Silica utilisation,
Silica utilization, use of Silica, silica, silicon dioxide, silica technology,
precipitated Silica, Silica characteristics, Silica density, Silica PH,
Silica functions, Silica process, Tire Silica, Green tire, Silica for
tire, green silica, Silica for footwear, silica for plastics, silica for
membrane, silica for silicone, silica for elastomer, silica for dentifrice,
silica business, silica for paper, silica for industry
