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Topic: Trichlorosilane

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	Dismutation of trichlorosilane - Patent 4038371
		Trichlorosilane is dismutated to dichlorosilane in the presence, as catalyst, of a tetraalkylurea.
		It is known that by dismutation of trichlorosilane dichlorosilane is obtained, and it is also known that dischlorosilane is used for the preparation of a deposit of silicon of very high purity in the electronics industry (silicon epitaxy).
		573 g of trichlorosilane and 57 g of tetramethylurea are introduced into a flask kept under a nitrogen atmosphere, the mixture is heated to the reflux temperature (33.degree.) and the dichlorosilane is distilled under atmospheric pressure at the rate at which it is formed.
	www.freepatentsonline.com /4038371.html (1019 words)

	Trichlorosilane - Wikipedia, the free encyclopedia
		Trichlorosilane is a chemical compound containing silicon, hydrogen, and chlorine.
		At high temperatures, it decomposes to produce silicon, and as such, purified trichlorosilane is the principal source of ultrapure silicon in the semiconductor industry.
		Industrially, trichlorosilane is produced by blowing hydrogen chloride through a bed of silicon powder at 300°C. There, they combine to make trichlorosilane and hydrogen according to the chemical equation
	en.wikipedia.org /wiki/Trichlorosilane (171 words)

	Process for preparing reductants of unsaturated organic compounds by the use of trichlorosilane and reducing agents - ...
		The reaction of the unsaturated organic compound with the trichlorosilane according to the present invention is a stoichiometric reaction.
		Usually, therefore, the trichlorosilane is used in an amount of from 1 to 5 moles and, preferably, from 1 to 3 moles per a mole of the unsaturated organic compound.
		In conducting the reducing reaction, therefore, when the trichlorosilane is made present in an excess amount, the compound that serves as the particular ligand reproduced from the reducing agent that is used is coordinated on the trichlorosilane, thereby to reproduce a new reducing agent in the reaction system.
	www.freepatentsonline.com /6420613.html (7421 words)

	Silicon - Open Encyclopedia (Site not responding. Last check: 2007-10-29)
		Today, silicon is instead purified by converting it to a silicon compound that can be more easily purified than silicon itself, and then converting that silicon compound back into pure silicon.
		Trichlorosilane is the silicon compound most commonly used as the intermediate, although silicon tetrachloride and silane are also used.
		In the Siemens process, high-purity silicon rods are exposed to trichlorosilane at 1150°C. The trichlorosilane gas decomposes and deposits additional silicon onto the rods, enlarging them according to chemical reactions like
	open-encyclopedia.com /Silicon (1307 words)

	Trichlorosilane -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-29)
		At high temperatures, it decomposes to produce silicon, and as such, purified trichlorosilane is the principal source of ultrapure silicon in the (A substance as germanium or silicon whose electrical conductivity is intermediate between that of a metal and an insulator; its conductivity increases with temperature and in the presence of impurities) semiconductor industry.
		In water, it rapidly decomposes to produce a (Any of a large class of siloxanes that are unusually stable over a wide range of temperatures; used in lubricants and adhesives and coatings and synthetic rubber and electrical insulation) silicone polymer while giving off (An aqueous solution of hydrogen chloride; a strongly corrosive acid) hydrochloric acid.
		Because of its reactivity and wide availability, it is frequently used in the synthesis of silicon-containing (A fertilizer that is derived from animal or vegetable matter) organic compounds.
	www.absoluteastronomy.com /encyclopedia/t/tr/trichlorosilane.htm (648 words)

	U.S. Patent: 5508369 - Organopolysiloxanes having a silanol group and process of making them - April 16, 1996
		42.4 g (0.2 mol) of 3-chloropropyl trichlorosilane, 62.6 g (0.62 mol) of triethyl amine, and 250 ml of toluene were placed within a one liter capacity flask equipped with a dropping funnel, a condenser, a thermometer, and a stirrer, and the mixture was cooled to 10.degree.
		52.3 g (0.2 mol) of 3-methacryloyloxy propyl trichlorosilane, 62.6 g (0.62 mol) of triethyl amine, 100 mg of 2,2'-methylene bis(4-ethyl-6-tert-butyl phenol), and 250 ml of toluene were placed in the similar flask as used in Example 1.
		37.7 g (0.2 mol) of cyanoethyl trichlorosilane, 62.6 g (0.62 mol) of triethyl amine, and 250 ml of toluene was placed in the similar flask as used in Example 1.
	www.everypatent.com /comp/pat5508369.html (3039 words)

	[No title]
		Trichlorosilane is stored in volumes up to 56,000 pounds in one tank, located above ground.
		For trichlorosilane, the scenario involves the release of the 56,000 pounds from the storage tank.
		We have had no significant release of trichlorosilane or anhydrous hydrogen chloride since the start-up of the EPI operation in 1984.
	www.rtk.net /rmp/sum7/TX/fac100000141964 (951 words)

	Silicon for the Chemical Industry (Site not responding. Last check: 2007-10-29)
		Two reactors are in constant operation: A trichlorosilane reactor for 1 g samples and a dimethylchlorosilicon reactor for 5 g samples which can operate at 4 bar.
		The trichlorosilane reaction has been studied with respect to reactivity and selectivity as well as detailed microscopic investigation to determine which inter-metallic phases catalyse the reaction [1, 4].
		The trichlorosilane selectivity decreased as expected with increasing temperature while the aluminium rich phases had the largest influences on the reactivity.
	www.material.ntnu.no /uorganisk/Annual/2000/Silicon.htm (294 words)

	[No title]
		Chlorine - A 0.25-in diameter orifice is formed in a 1-ton cylinder as a result of a poor bond between the lead alloy and the fusible plug retainer.
		This scenario is based on a release that occurred at the facility on August 8, 1998.
		Anhydrous Ammonia, May 8, 1998 Trichlorosilane, August 8, 1998 Information from each release was collected and reviewed to determine the corrective actions to be implemented to prevent a reoccurrence.
	www.rtk.net /rmp/sum7/FL/fac100000105995 (1000 words)

	Learn more about Trichlorosilane in the online encyclopedia. (Site not responding. Last check: 2007-10-29)
		Learn more about Trichlorosilane in the online encyclopedia.
		At high temperatures, it decomposes to produce silicon, and as such, purified trichlorosilane is the principle source of ultrapure silicon in the semiconductor industry.
		Industrially, trichlorosilane is produced by blowing hydrochloric acid through a bed of silicon powder at 300°C. There, they combine to make trichlorosilane and hydrogen according to the chemical equation
	www.onlineencyclopedia.org /t/tr/trichlorosilane.html (235 words)

	Publikationen Prof. Dr. Gerhard Roewer
		Mechanism of the silicide-catalyzed hydrodehalogenation of silicon tetrachloride to trichlorosilane.
		A mechanism of transition metal silicide-catalyzed hydrodehalogenation of silicon tetrachloride to trichlorosilane is proposed.
		Catalytical conversion of silicon tetrachloride to trichlorosilane: characterization of the nickel silicalite catalyst by ferromagnetic resonance spectroscopy.
	www.chem.tu-freiberg.de /ano/publ_roewer.html (10954 words)

	RFT-39 (Site not responding. Last check: 2007-10-29)
		They are prepared by contacting trichlorosilane with a reagent composition comprising a tertiary polyamine.
		The resulting tetradecachlorocyclohexasilane dianion can be chemically reduced to cyclohexasilane, a compound useful in the deposition of amorphous silicon films.
		Compounds containing a tetradecachlorocyclohexasilane dianion are prepared by contacting trichlorosilane with a reagent composition comprising a tertiary polyamine.
	www.ndsu.nodak.edu /ndsu/research_foundation/RFT-39.htm (164 words)

	The Science Center - your guide to educational resources on the internet (Site not responding. Last check: 2007-10-29)
		Rose quartz is pink or rose colored due to titanium, and tiger eye, the interesting yellow and brown shimmering gemstone, is quartz that contains asbestos fibers.
		Hydrochloric acid, HCl, is chemically combined with Si at 300 ºC to produce trichlorosilane and hydrogen gas:
		Trichlorosilane is heated to 1150 ºC, the temperature at which it decomposes.
	www.science-education.org /classroom_activities/chlorine_compound/trichlor.html (802 words)

	Trichlorosilane - TheBestLinks.com - Atomic weight, Boiling point, Chlorine, Color, ... (Site not responding. Last check: 2007-10-29)
		Trichlorosilane - TheBestLinks.com - Atomic weight, Boiling point, Chlorine, Color,...
		Trichlorosilane, Atomic weight, Boiling point, Chlorine, Color, Chemical...
		You can add this article to your own "watchlist" and receive e-mail notification about all changes in this page.
	www.thebestlinks.com /Trichlorosilane.html (210 words)

	Read about Trichlorosilane at WorldVillage Encyclopedia. Research Trichlorosilane and learn about Trichlorosilane here! (Site not responding. Last check: 2007-10-29)
		Trichlorosilane is a chemical compound containing silicon, hydrogen, and
		At high temperatures, it decomposes to produce silicon, and as such, purified trichlorosilane is the principal source of ultrapure silicon in the
		In water, it rapidly decomposes to produce a
	encyclopedia.worldvillage.com /s/b/Trichlorosilane (158 words)

	4540-4541 (Site not responding. Last check: 2007-10-29)
		Quantum Chemical Mechanism of Heterogeneous Reaction between Trichlorosilane and Adsorbed Water
		We investigated the reaction mechanism of the HCl elimination process of trichlorosilane with adsorbed water in the gas phase by ab initio quantum chemical calculations.
		Our results show that the surface reactions on the steel-use-stainless filter are indispensable for obtaining the result that HCl is generated with a very small amount of H
	jjap.ipap.jp /link?JJAP/42/4540 (265 words)

	Trichloro(chloromethyl)silane CAS 1558-25-4 Synonyms (Chloromethyl)trichlorosilane (Site not responding. Last check: 2007-10-29)
		Large spills: dike far ahead of spill for later disposal.
		Withdraw immediately in case of rising sound from venting safety device or any discoloration of tank due to fire.(Non-Specific -- Methyl Trichlorosilane) Small fires: Dry chemical, CO, halon, water spray, or standard foam.
		Large fires: Water spray, fog, or standard foam is recommended.
	www.chem007.com /specification_d/chemicals/supplier/cas/Trichloro(chloromethyl)silane.asp (368 words)

	[No title] (Site not responding. Last check: 2007-10-29)
		IR multiphoton dissociation of trichlorosilane induced by pulsed CO and NH laser radiation
		, are the main products of dissociation of trichlorosilane.
		V M Apatin, V B Laptev, E A Ryabov, "IR multiphoton dissociation of trichlorosilane induced by pulsed CO and NH laser radiation", QUANTUM ELECTRON, 2003, 33 (10), 894-896.
	www.turpion.org /php/paper.phtml?journal_id=qe&paper_id=2519 (121 words)

	Environmental Protection Agency
		(Non-Specific -- Methyl Trichlorosilane) If inhaled, may be harmful; contact may cause burns to skin and eyes.
		Large fires: Water spray, fog, or standard foam is recommended (DOT 1987, Guide 29).
		Cool containers that are exposed to flames with water from the side until well after fire is out.
	yosemite.epa.gov /oswer/CeppoEHS.nsf/Profiles/1558-25-4?OpenDocument (408 words)

	[No title] (Site not responding. Last check: 2007-10-29)
		a silicon deposition step for forming silicon by reacting trichlorosilane with hydrogen at a temperature of 1,3000° C. or higher;
		a trichlorosilane forming step for forming trichlorosilane by contacting the exhausted gas in the silicon deposition step to raw material silicon to react hydrogen chloride contained in said exhausted gas with silicon; and
		a trichlorosilane first recycling step for separating trichlorosilane from the exhausted gas in the trichlorosilane forming step and recycling it to the silicon deposition step.
	www.uspto.gov /web/patents/patog/week34/OG/html/1297-4/US06932954-20050823.html (133 words)

	Palladium-Catalyzed Selective Dechlorination of Polychloromethylsilanes with Trichlorosilane (Site not responding. Last check: 2007-10-29)
		(n = 0-2 (1-3), m = 0-3 (a-d)) with trichlorosilane was studied in the presence of group 10 transition-metal compounds at reaction temperatures between 100 and 150
		The reactions give the corresponding less chlorinated compounds in good yields without reducing Si-Cl bonds, only when Pd(OAc)
		by controlling the amount of trichlorosilane reductant and the reaction conditions.
	pubs.acs.org /cgi-bin/abstract.cgi/orgnd7/1998/17/i04/abs/om970490c.html (170 words)

	Definition of trichlorosilane - Merriam-Webster Online Dictionary
		trichlorosilane is one of more than 1,000,000 entries available at Merriam-WebsterUnabridged.com.
		For More Information on "trichlorosilane" go to Britannica.com
		Now you can take the Eleventh Edition with you anywhere as Franklin's new Speaking Electronic Handheld!
	www.m-w.com /dictionary/trichlorosilane (82 words)

	[No title] (Site not responding. Last check: 2007-10-29)
		) to form a crude gas stream containing trichlorosilane (SiHCl
		b) removing impurities from the resulting crude gas stream by washing with condensed chlorosilanes to produce a purified crude gas stream containing trichlorosilane and silicon tetrachloride and a homogeneous liquid phase consisting essentially of SiCl
		, characterized in that the crude gas stream containing trichlorosilane and silicon tetrachloride is liberated from solids as far as possible by gas filtration before being washed with the condensed chlorosilanes,
	www.uspto.gov /web/patents/patog/week06/OG/html/1291-2/US06852301-20050208.html (260 words)

	CCCBDB listing of experimental data (Site not responding. Last check: 2007-10-29)
		Silane, trichloro-; Silici-chloroforme; Siliciumchloroform; Silicochloroform; Trichloorsilaan; Trichloromonosilane; Trichlorosilane; Triclorosilano; Trichlorsilan; UN 1295;
		JG Smith "The Millimetre Wave Spectrum of Trichlorosilane" J. Mol.
		Shimanouchi, T., Tables of Molecular Vibrational Frequencies, Consolidated Volume 1, NSRDS NBS-39
	srdata.nist.gov /cccbdb/exp2.asp?casno=10025782 (125 words)

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