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Wikipedia about silica

Redir: Silica

The chemical compound silicon dioxide, also known as silica or silox (from the Latin "silex"), is an oxide of silicon, chemical formula Oxygen: 2, and has been known for its hardness since the 9th century. Silica is most commonly found in nature as sand or quartz, as well as in the cell walls of diatoms. It is a principal component of most types of glass and substances such as concrete. Silica is the most abundant mineral in the earth's crust.

Manufactured forms

Sio2_130m2_per_gram_under_blue_book_1600dpi.jpg

  • glass (a colorless, high-purity form is called fused silica)
  • synthetic amorphous silica, silica gel
  • pyrogenic silica (sometimes called fumed silica or silica fume)

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, with 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, the traditional method has been 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 chaotropes.
  • Added to medicinal anti-foaming agent, like Simethicone, in a small proportion to enhance defoaming activity.
  • As hydrated silica in toothpaste (abrasive to remove plaque.)
  • As a pesticide as Diatomaceous Earth.
  • As a high-temperature thermal protection fabric (http://www.firesleeveandtape.com/silica-high-temperature-fabric.html)
  • In cosmetics for its light-diffusing properties.

Inhalation health effects

Inhaling powder of any kind (other than prescribed medicines) is not recommended. When considering potential inhalation effects of silica, it is important to understand whether the silica is crystalline (such as quartz) or amorphous (non-crystalline). See the structure and properties section below for more information on which forms are crystalline and non-crystalline.

Search results for Silica

CRYSTALLINE SILICA PRIMER

Crystalline silica primer/staff, Branch of lndustrial Minerals. (Special publication) ... Stability Fields of the Different Forms of Silica In Glass, ...minerals.usgs.gov/minerals/pubs/commodity/silica/780292.pdf

Silica eTool

This eTool explains hazards and controls for Silica ... Get the basics on Silica and Silicosis ... 2. Obtain a measurement of Silica concentration ...www.osha.gov/SLTC/etools/silica/index.html

Advanced Aquarist Feature Article

SILICA IN REEF AQUARIUMS by RANDY HOLMES-FARLEY, Ph.D. Silica is a chemical ... Much of the debate swirls around whether silica sand is a good choice for the ...advancedaquarist.com/issues/jan2003/feature.htm

silica: Definition from Answers.com

silica n. A white or colorless crystalline compound, SiO 2 , occurring abundantly as quartz, sand, flint, agate, and many other minerals and used towww.answers.com/topic/silica

Silica: FireCracker

For its development Silica joined forces with Analog Devices and Bluetechnix. ... Contact Silica Technical Marketing. Legal Notices copyright privacy ...www.silica.com/index.php?id=1142

Images found for Silica

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News about Silica

Rice husk ash found good for mixing with cement

Manila BulletinA Filipino scientist has developed a process by which rice husk ash may be used as a supplementary material for producing cement.http://www.mb.com.ph/AGRI20081003136780.html

More to be known about CWD

Detroit Free PressMT. PLEASANT -- One of the nation's leading authorities on chronic wasting disease says that while mucous from a deer's nose can spread the disease, it isn't the most dangerous source of infection.http://www.freep.com/apps/pbcs.dll/article?AID=/20081002/SPO...

Scientists successfully use nanoparticles to treat brain, spinal cord injuries

New KeralaWashington, October 2 : Purdue University researchers have shown that it is possible to use nanoparticles for delivering treatments to injured brains and spinal cord cells.http://www.newkerala.com/fs/f/a-5793.htm

Gossan Retains Hatch to Provide Engineering Process Support for the Inwood Magnesium Project

Marketwire via Yahoo! Finance Gossan Resources Limited(FRANKFURT/FREIVERKEHR XETRA:GSR) has retained Hatch of Montreal, Canada, to provide engineering process support for the Inwood Magnesium Project The agreement covers a 5-phase work program culminating with the opening of a Certificate of Authorization file with the Manitoba government for construction and environmental approvals for a production facility at Inwood, ...http://biz.yahoo.com/iw/081002/0439835.html

Gossan Retains Hatch to Provide Engineering Process Support for the Inwood Magnesium Project

CCNMatthews via Yahoo! Finance WINNIPEG, MANITOBA-- - Gossan Resources Limited has retained Hatch of Montreal, Canada, to provide engineering process support for the Inwood Magnesium Project The agreement covers a 5-phase work program culminating with the opening of a Certificate of Authorization file with the Manitoba government for construction and environmental approvals for a production facility at Inwood, located in ...http://biz.yahoo.com/ccn/081002/200810020489495001.html?.v=1

News about Silica

Sand spill closes westbound I-70

Columbia Daily TribuneCrews spent almost four hours yesterday cleaning up silica sand from Interstate 70 in west Columbia after a multiple-vehicle collision that led to an overturned semi truck. Columbia firefighters were dispatched at about 8:15 a.m. to the 123.3-mile ... http://www.columbiatribune.com/2008/Sep/20080913News008.asp

Congress to take up anthrax investigation

Frederick News-PostIn his statement, Bartlett wrote that the fineness of the anthrax spore powder used in the letter, that it was coated with silica, and that it was electrically charged, causing the spores to repel each other and fly apart, were all characteristics ... http://www.fredericknewspost.com/sections/news/display.htm?S...

Tractor-trailer collision causes delay on I-70

Columbia MissourianAccording to Sapp, one of the tractor-trailers, which was carrying a load of silica sand, attempted to match the tempo of the traffic flow, which had slowed because of the earlier wreck.http://www.columbiamissourian.com/stories/2008/09/12/tractor...

Press proves immune to FBI's anthrax corrective

The RegisterDetrick and the Armed Forces Institute of Pathology had determined the anthrax to be weaponized because silica was allegedly seen on the surface of the spores.http://www.theregister.co.uk/2008/09/11/anthrax_fbi_conspira...

Gossan's Inwood Magnesium Property Hosts 28.8 Million Measured Tonnes ...

TMCnetThe Company also has a large deposit of magnesium-rich dolomite, the world-wide rights to the Zuliani magnesium production process, and a silica sand deposit.http://www.tmcnet.com/usubmit/-gossans-inwood-magnesium-prop...

Search results for Silica

silica - Definitions from Dictionary.com

noun . the dioxide form of silicon, SiO 2, occurring esp. as quartz sand, flint, and agate: used usually in the form of its prepared white powder chiefly in the manufacture of ... http://dictionary.reference.com/search?q=silica

NOW Foods - Silica Complex 500 mg Vegetarian - 90 Tabs

nowfoods.com manufacturer of discount nutritional suppliments, natural and affordable vitamins, mineral supplements, pre-natal, sports and other and health-related productshttp://www.nowfoods.com/?action=itemdetail&item_id=3790

Safety and Health Topics: Silica, Crystalline

Silica, Crystalline ... Silicosis is a disabling, nonreversible and sometimes fatal lung disease caused by overexposure to respirable crystalline silica.http://www.osha.gov/SLTC/silicacrystalline/index.html

Silica Studios

Silica Studios - Ceramics studio and showroom located in sunny Palm Springs, CA ... Silica Studios is a premier custom pottery studio and showroom in Palm Springs, CA.http://silicastudios.com

SILICA SOUND GLASS GUITAR SLIDES - Home

Silica Sound glass guitar slides are handmade with a thickened end to promote a unique grip on the tip of your finger, as well as added mass for better sustain. They are ... ... http://www.silicasound.com/
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Videos found for Silica

Eating Silica Gel by aweekofkindnes...

Eating Silica Gel by aweekofkindness.comThis was filmed on the Ohio Turnpike. For more hilarious videos, go to www.aweekofkindness.comFlash - Video

Mother Nature's Preserves: Fresh Fl...

Mother Nature's Preserves: Fresh Flowers With Silica Gel CrystalsReview of Mother Nature's Preserves: Fresh Flowers With Silica Gel Crystals. Great for drying out flowers!Flash - Video

Silica Exposure Study & Illinois On...

Silica Exposure Study & Illinois On-Site Consultation ProgramIllinois Department of Commerce and Economic OpportunityRealMedia - Video

Silica Find Experienced Legal Repre...

Silica Find Experienced Legal Representation Lawyers AttorneysThe lawyers at LegalView will be happy to provide assistance with silica related lawsuits from LegalView Information on class action lawsuits class action attorneys and more from...Flash - Video

Silica Gel Packs

Silica Gel PacksGuh.Flash - Video

Videos found for Silica

romulo2.mov

romulo2.movMD Simulation of Fracture in Silica I MD Simulation of Fracture in Silica II (Animations - Requires a Quicktime compatible media player) Download Quicktime Viewerquicktime: 4.3 MB w:640px - h:480px

Silica Gel Keystrokes

Silica Gel KeystrokesSilica Gel Keystrokes Computer Hardware Software,Peripherals,Keyboards Silica_Gel_Keystrokes Silica Gel Keystrokes swfflash: 2.8 MB w:470px - h:270px

Silica Gel Pillow

Silica Gel PillowSilica Gel Pillow Textiles Leather Products,Bedding,Pillow Silica_Gel_Pillow Silica Gel Pillow swfflash: 2.8 MB w:470px - h:270px

concrete-finishing.qt

concrete-finishing.qtQuicktime formatquicktime: 3.6 MB w:240px - h:180px

glass2.mpeg

glass2.mpegmpeg: 2.7 MB w:400px - h:400px

Answers for Silica

Riveter

Have you ever taken vitamins or silica for your hair? How much did your hair thicken if any?

RiveterVitamins do not help me at all, nothing can help your hair grow in thicker
faith2u

What are the negative effects on area surrounding silica mines?

faith2uThese ought to help. Most of the mining situations I know of are in desert areas and far from towns. Even though the process has a negligable effect out there, anything close to towns will have the ...
rotciv_gan

How to know if silica gel is saturated?

rotciv_ganIt will be a bit harder and will be wet though its wetness depends on the amount of moisture it has soaked.
Riveter

Have you ever taken vitamins or silica for your hair? How much percent did your hair thicken if any?

RiveterI took Biotin first, and then Appearex a couple years ago for about 6 months each. Both helped my nails and hair a lot. It did take about 2 months before I started seeing results. My hair is already p...
Smiley

Do all paints contain silica? What is silica paint and what is it used for?

Smileysilica is sand. it is added to paint to make the paint non-slip. it probably wasn't in the paint on the bottom of the shipping container. it is bad for you, but a few breaths is nothing to worry a...

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