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silica gel

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

silica gel chemical compound. It is a colloidal form of silica , and usually resembles coarse white sand. It may be prepared by partial dehydration of meta silicic acid, H ₂ SiO ₃ . Because it has many tiny pores, it has great adsorptive power. It is used as a drying agent, as a catalyst or catalyst carrier, and in purifying various substances. Silica aerogel is fully dehydrated silica gel; it is very porous and is often used in insulation, e.g., for refrigerators.

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silica gel

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

sil·i·ca gel • n. hydrated silica in a hard granular hygroscopic form used as a desiccant.

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"silica gel." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

"silica gel." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O999-silicagel.html

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silica gel

A Dictionary of Food and Nutrition | 2005 | | Copyright

silica gel A drying agent.

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DAVID A. BENDER. "silica gel." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

DAVID A. BENDER. "silica gel." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O39-silicagel.html

DAVID A. BENDER. "silica gel." A Dictionary of Food and Nutrition. 2005. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O39-silicagel.html

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Free newspaper and magazine articles

	Synthesis and characterization of porous silica gels for biomedical... Magazine article from: Trends in Biomaterials and Artificial Organs; 1/1/2005
	How to choose the best adsorbent in liquid chromatography: using modified... Magazine article from: Canadian Chemical News; 6/1/1999
	Silica gel is in urgent need of quality improvement.(Inorganics) Magazine article from: China Chemical Reporter; 12/26/2008