Silica

Silica
18,000 Vitamins & Supplements. Same Day Shipping, 5 Star Guarantee.
www.vitacost.com

Natural Silica Product Sale $9.98
Save on All Natural Herbal Formula, Free Shipping on order over $100.
www.vitadigest.com

Industrial Maid Air Cleaners
Remove virtually any dust, particulate, fume or odor from your work space using our broad line of air cleaning equipment and diverse arrangment of filters.
www.industrial-maid.com

Biosil from $15.19 New
Nourish Your Body's Beauty Proteins New Manufacturer. Free Shipping.
MyVitaNet.com

Silica Formula $10.50
Shop with us for Great Deals Wholesale Price, Same Day Shipping.
www.VitaminDeal.com

Siliac Disease
Relax. Take a deep breath. We have the answers you seek.
www.RightHealth.com/alzheimers

Silica Liquid by Global Health Trax
Oxygen Elements Plus supplies the body with a steady diet of free oxygen, hydrogen, full spectrum minerals, amino acids, and enzymes, all the while cleansing your cells. ThreeLac here, too.
www.life-support-nutrition.com

Mineral Silica
Find mineral silica and Compare prices at Smarter.com.
www.smarter.com

Silica
Great selection of Homeopathic remedies.
www.1-800homeopathy.com

Silica Mineral
Silica mineral and More! from Top Brands at Low Prices.
www.pricerunner.com

Warning: mkdir() [function.mkdir]: Permission denied in /home/webs/affiliatelib2/CacheManager.php on line 12

Warning: mkdir() [function.mkdir]: No such file or directory in /home/webs/affiliatelib2/CacheManager.php on line 12

Warning: fopen(/home/templatecore2cache//*cluesnet.com/11/114a0b1484a0525c11ca1d426be5b472a08793f8.tc2cache) [function.fopen]: failed to open stream: No such file or directory in /home/webs/affiliatelib2/CacheManager.php on line 130

Warning: fwrite(): supplied argument is not a valid stream resource in /home/webs/affiliatelib2/CacheManager.php on line 131

Warning: fclose(): supplied argument is not a valid stream resource in /home/webs/affiliatelib2/CacheManager.php on line 132

Silica redirects here. For other uses, see Silica (disambiguation)

The chemical compound silicon dioxide, also known as silica or silox (from the Latin "silex"), is the oxide of silicon, chemical formula , and has been known for its hardness since the 16th century. It is a principal component of most types of glass and substances such as concrete.

Siliceous is an adjective meaning "related to silica".

Manufactured forms Silica is manufactured in several forms including:

glass (a colorless, high-purity form is called fused silica)
synthetic amorphous silica
silica gel (used e.g. as desiccants in new clothes and leather goods)

It is used in the production of various products.

Inexpensive soda-lime glass is the most common and typically found in drinking glasses, bottles, and windows.
A raw material for many whiteware ceramics such as earthenware, stoneware and porcelain.
A raw material for the production of Portland cement.
A food additive, primarily as a flow agent in powdered foods, or to absorb water (see the ingredients list for).
The natural ("native") oxide coating that grows on silicon is hugely beneficial in microelectronics. It is a superior electric insulator, possessing high chemical stability. In electrical applications, it can protect the silicon, store charge, block current, and even act as a controlled pathway to allow small currents to flow through a device. At room temperature, however, it grows extremely slowly, and so to manufacture such oxide layers on silicon, the traditional method has been the deliberate heating of silicon in high temperature furnaces within an oxygen ambient (thermal oxidation).
Raw material for aerogel in the Stardust (spacecraft)
Used in the extraction of DNA and RNA due to its ability to bind to the nucleic acids under the presence of chaotropic agent.
Added to medicinal anti-foaming agent, like Simethicone, with a small portion to enhance defoaming activity.

Health effects Inhaling finely divided crystalline silica dust in significant quantities can lead to silicosis or (much more rarely) cancer, as the dust becomes lodged in the lungs and continuously irritates them (silica does not dissolve over time). This effect can be an occupational hazard for people working with sandblasting equipment, products that contain powdered silica, and so on.

In all other respects, silicon dioxide is inert and harmless. When silica is ingested orally, it passes unchanged through the gastrointestinal tract, exiting in the feces, leaving no trace behind. Small pieces of silicon dioxide are equally harmless, as long as they are not large enough to mechanically obstruct the GI tract, or jagged enough to lacerate its lining. Silicon dioxide produces no fumes and is insoluble in vivo. It is indigestible, with zero nutritional value and zero toxicity.

Chemistry Silicon dioxide is formed when silicon is exposed to oxygen (or air). A very thin layer (approximately 1 nanometre or 10 Ångström) of so-called 'native oxide' is formed on the surface when silicon is exposed to air under ambient conditions. Higher temperatures and alternate environments are used to grow well-controlled layers of silicon dioxide on silicon.

Silicon dioxide has Covalent bond and forms a Crystal structure (also known as lattice or continuous).

Silicon dioxide is attacked by hydrofluoric acid (HF). HF is used to remove or pattern silicon dioxide in the semiconductor industry.

References

R. K. Iler, The Chemistry of Silica (ISBN 0-471-02404-X)