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Topic: Sodium oxide

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Calcium oxide

Nitric acid

Potassium

	Oxide - Wikipedia, the free encyclopedia
		Oxides are characterized by a redistribution of electrons, in which the oxygen atoms have a net surplus of electrons and the other atoms a net lack.
		Oxides of metals occur as ionic compounds, or salts, which are solid at room temperature.
		The oxides of the chemical elements in their highest oxidation state are predictable and the chemical formula can be derived from the number of valence electrons for that element.
	en.wikipedia.org /wiki/Oxide (492 words)

	NM Epoxy handbook - Concrete and air pollutants (Site not responding. Last check: 2007-11-04)
		In the reaction between potassium hydroxide or sodium hydroxide (strong base) and carbon acid (weak acid), potassium carbonate (sodium carbonate) and water are formed.
		In the subsequent reaction between potassium carbonate (sodium carbonate) and calcium hydroxide, calcium carbonate and potassium hydroxide (sodium hydroxide) are formed.
		Sodium and potassium carbonate are transferred to sulphates and nitrates, respectively, followed by the reaction with calcium hydroxide.
	www.nilsmalmgren.se /en/kemi/luft.html (1817 words)

	Sodium (Site not responding. Last check: 2007-11-04)
		Sodium, Na, is a Alkali Metal element, found in Group Ia of the periodic table.
		Sodium metal is highly reactive and tarnished readily in air due to the formation of a layer of Sodium Oxide on the surface of the metal.
		Sodium is detected in its compounds by the bright yellow colouration which it imparts to flames when burned and by spectroscopic methods.
	www.ucc.ie /ucc/depts/chem/dolchem/html/elem/elem011.html (309 words)

	Sodium (Na) - Chemical properties, Health and Environmental effects
		Sodium doesn’t react with nitrogen, not even at very high temperatures, but it can react with ammonia to form sodium amide.
		Sodium in its metallic form is an essential component in the making of esters and in the manufacture of organic compounds.
		Sodium salts are found in seawater (1.05%), salty lakes, alkaline lakes and mineral spring water.
	www.lenntech.com /Periodic-chart-elements/Na-en.htm (716 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		We have found that when sodium nitrate (or potassium nitrate) used routinely in the glass industry to provide oxidising conditions to the glass melt is used in the batch, sodium sulphate (a fining agent) must be lowered which may adversely affect the fining action of sodium sulphate.
		Manganese oxide, which we believe aids in adjusting the oxidation state of iron oxide in the glass, also allows the use of anthracite coal to enhance the decomposition of sodium sulphate and improving the fining (removal of gaseous inclusions) characteristics of the glass batch.
		In theory, increasing manganese oxide will cause the iron oxide equilibrium in the melt to shift toward the oxidised form of the iron while the reductant reacts with the sodium sulphate to decompose into sodium oxide that becomes a part of the glass and sulphur trioxide that provides the fining action at lower temperatures.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=99/48825.990930&ELEMENT_SET=DECL (4822 words)

	Optical fibres and glasses - Patent 4275951 (Site not responding. Last check: 2007-11-04)
		Calcium oxide, barium oxide and strontium oxide all behave similarly in glasses and all of these oxides are suitable additives for the core glass of the fibre according to the invention.
		Other oxides may be added to the glasses according to the invention, up to a total of about 5 mole percent, the only limitation on these additives being that they should not cause substantial worsening of the optical properties, for example, absorption loss of the glass.
		1, and the core composition is derived from that composition by substitution of calcium oxide, to an extent of 8 mole percent for soda and silica.
	www.freepatentsonline.com /4275951.html (4843 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations (Site not responding. Last check: 2007-11-04)
		A method is described for removing sodium oxide from a fluent stream of liquid sodium by coldtrapping the sodium oxide.
		Sodium will remain in a molten state at temperatures below that at which sodium oxide will crystallize out and form solid deposits, therefore, the contaminated stream of sodium is cooled to a temperature at which the solubility of sodium oxide in sodium is substantially decreased.
		The stream is kept in contact with the wool until the sodium oxide is removed by crystal growth on the wool, then the stream is reheated and returned to the system.
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=4329503 (223 words)

	sodium
		Sodium is the sixth most abundant element on earth, comprising about 2.6% of the earth's crust; it is the most abundant of the alkali group of metals of which it is a member.
		Sodium is a soft, bright, silvery metal which floats on water, decomposing it with the evolution of hydrogen and the formation of the hydroxide.
		Metallic sodium is vital in the manufacture of sodamide and esters, and in the preparation of organic compounds.
	www.speclab.com /elements/sodium.htm (850 words)

	Sodium oxide - Wikipedia, the free encyclopedia
		It is also a constituent of glass at around 15% sodium oxide.
		Sodium oxide has the formula weight of 61.979u.
		Sodium oxide is hydrolyzed by water to form sodium hydroxide.
	en.wikipedia.org /wiki/Sodium_oxide (170 words)

	Rio Tinto Borax : Library : Pioneer Magazine
		In most commercial silicate glasses, calcium oxide, magnesium oxide, sodium oxide, and potassium oxide are important tools for adjusting formulations to the desired viscosity, while aluminum oxide is commonly used to enhance glass durability.
		Boric oxide, sodium oxide, and calcium oxide are all about equally effective at lowering high temperature viscosity when substituted for silica, while aluminum oxide is not effective.
		Boric oxide substitutions for silica are the only ones that have all the required properties, simultaneously decreasing high temperature viscosity, lowering liquidus temperature, increasing moisture resistance, and reducing surface tension.
	www.borax.com /pioneer20.html (812 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		In another embodiment, the instant invention is a method for the production of platy sodium octasilicate, comprising the step of: heating a liquid aqueous colloidal silica dispersion containing silica, sodium oxide, and water, the mole ratio of the silica to the sodium oxide being in the range of from about 3.5 to about 10.
		In the broad scope of the instant invention, the mole ratio of sodium hydroxide to silica and a mole ratio of water to silica must be effective to produce a synthetic magadiite wherein more than fifty percent by weight of the synthetic magadiite is platy synthetic magadiite.
		When the portion of the sodium ions of the synthetic platy magadiite of the instant invention is ninety percent or more and such acidified synthetic platy magadiite (or perhaps more accurately platy silica) is heated sufficiently to drive off water, then the acidified synthetic platy magadiite is converted into quartz-like silica plates.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=01/83370.011108&ELEMENT_SET=DECL (2317 words)

	Process of preparing zirconium oxide-containing ceramic formed bodies - Patent 5326519 (Site not responding. Last check: 2007-11-04)
		Precisely in the case of the aluminium oxide side phase, which preferably consists of the.beta."-crystal form, the zirconium/zirconium oxide addition has proved to be very advantageous for the formation of a fine, glass phase-free grain structure which makes this solid body electrolyte ceramic much firmer in comparison with conventionally produced.beta./.beta."-aluminium oxide.
		C., the metallic components of the green body react partly with the oxygen of the atmosphere and partly with the oxides contained in the mixture itself, with an increase of the volume which compensates for the shrinkage in the case of the sintering and thereby results in a high density and low porosity.
		In one variant, 9% by weight sodium carbonate was replaced by 9% by weight of a mixture of sodium carbonate and potassium carbonate (Alfa Prod.) in a mole ratio of 0.7:0.3.
	www.freepatentsonline.com /5326519.html (2888 words)

	chemical reactions of period 3 elements (Site not responding. Last check: 2007-11-04)
		Sodium has a very exothermic reaction with cold water producing hydrogen and a colourless solution of sodium hydroxide.
		The reaction is relatively slow because of the existing strong aluminium oxide layer on the metal, and the build-up of even more oxide during the reaction.
		Sodium burns in oxygen with an orange flame to produce a white solid mixture of sodium oxide and sodium peroxide.
	www.chemguide.co.uk /inorganic/period3/elementsreact.html (1269 words)

	Sodium India, Silicate India, Sodium Silicate India, Sodium Oxide India, Liquid Sodium Silicate India, Silica Sand ... (Site not responding. Last check: 2007-11-04)
		Sodium Silicate is a compound mixture of sodium oxide i.e.
		C gives sodium silicate glass in lumps form which is easily dissolved in hot water.
		Sodium Metasilicate 5H2o is used in Tanning Industries, Leather Industries, Metal Treatment, Washing Powder etc. available in Powder form of various mess size.
	www.shreesaibabachemicals.com /products.htm (208 words)

	Rio Tinto Borax : Library : Pioneer Magazine
		When sodium oxide (Na2O) is added to the glass composition, two significant changes can occur to the structure displayed in Figure 3.
		In the first, oxygen from the sodium oxide converts some of the BO3 units into BO4 units, where the boron atom is linked to four oxygen atoms, and forms a tetrahedron (Figure 4).
		It has shown that the sodium oxide content is used exclusively for the formation of BO4 units until it exceeds a certain threshold value.
	www.borax.com /pioneer19.html (1070 words)

	GCSE notes on Extracting Metals at Doc Brown's Chemistry Clinic. advantages and disadvantages environmental impact of ...
		from molten aluminium oxide or sodium from molten sodium chloride.
		Their oxides are easily reduced to the metal by heating in a stream of hydrogen, though this is an extraction method rarely used in industry.
		The chromium(III) oxide is reduced to chromium by O loss, the aluminium is oxidised to aluminium oxide by O gain, and the aluminium is the reducing agent i.e.
	www.wpbschoolhouse.btinternet.co.uk /page04/Mextract.htm (2857 words)

	Batteries with Orthorhombic Sodium Manganese Oxide Cathodes (Site not responding. Last check: 2007-11-04)
		This material is based on an orthorhombic sodium manganese oxide, and has a capacity of approximately 160 mAh/g in sodium batteries in a voltage range compatible with polymer electrodes (3.4-2.2 V vs. Na).
		To date a sodium polymer cell has cycled through 150 deep discharge cycles at moderate rates.
		The lithiated form of the orthorhombic sodium manganese oxide maintains its structural integrity upon deep discharge and prolonged cycling in lithium cells.
	www.zyn.com /flcfw/fwtproj/Batterie.html (171 words)

	Fluorine-free calcium-aluminosilicate glasses - Patent 4438212 (Site not responding. Last check: 2007-11-04)
		A fluorine-free calciumaluminosilicate glass consisting essentially of 30 to 34% silica, 28 to 33% calcium oxide, 32 to 40% alumina and 1 to 3% sodium oxide, and being in particulate form in which the individual particles have a particle size of less than 100 microns.
		Certain preferred glasses of this invention consist essentially of 30 to 34% silica, 28 to 33% calcium oxide, 32 to 40% alumina and 1 to 3% of sodium oxide.
		The glasses of this invention may be prepared by melting together silica, alumina, calcium oxide and the required alkali metal and/or titanium oxide in the previously described amounts.
	www.freepatentsonline.com /4438212.html (2551 words)

	Adelaide Brighton Cement Ltd AN 156 (Site not responding. Last check: 2007-11-04)
		Aluminium oxide; calcium oxide; chloride; ferric oxide; loss on ignition; magnesium oxide; phosphorus pentoxide; potassium oxide; silicon dioxide; sodium oxide; sulphur trioxide; titanium oxide
		Aluminium oxide; calcium oxide; chloride; ferric oxide; insoluble residue; loss on ignition; magnesium oxide; phosphorus pentoxide; potassium oxide; silicon dioxide; sodium oxide; sulphur trioxide; titanium oxide
		Aluminium oxide; calcium oxide; chloride; ferric oxide; free lime; insoluble residue; loss on ignition; magnesium oxide; phosphorus pentoxide; potassium oxide; silicon dioxide; sodium oxide; sulphur trioxide; titanium oxide
	www.nata.asn.au /natadir/149.php (354 words)

	AllRefer.com - sodium silicate, Compound & Element (Compounds And Elements) - Encyclopedia
		sodium silicate, any one of several compounds containing sodium oxide, Na O, and silica, Si O, or a mixture of sodium silicates.
		They are produced chiefly by fusing sand and sodium carbonate in various proportions.
		The greatest single use of sodium silicates is as a raw material for making silica gel.
	reference.allrefer.com /encyclopedia/S/sodiumsi.html (194 words)

	Chemical Sciences: Industrial Chemical Processes of Aluminum
		Aluminum compounds, primarily the oxide in forms of various purity and hydration, are fairly widely distributed in nature.
		Reduction of aluminum oxide with carbon is not possible, since the free energy of reaction is so highly unfavorable that it cannot be overcome.
		Sodium amide is a solid at room temperature but is molten at high temperatures, where it reacts with carbon to produce sodium cyanide.
	www.ualberta.ca /~jplambec/che/p102/p02265.htm (1381 words)

	Singulair Online, Description, Chemistry, Ingredients - Montelukast - RxList Monographs
		Montelukast sodium is a hygroscopic, optically active, white to off-white powder.
		Montelukast sodium is freely soluble in ethanol, methanol, and water and practically insoluble in acetonitrile.
		Each 5-mg chewable Singulair tablet contains 5.2 mg montelukast sodium, which is the molar equivalent to 5.0 mg of free acid, and the following inactive ingredients: mannitol, microcrystalline cellulose, hydroxypropyl cellulose, red ferric oxide, croscarmellose sodium, cherry flavor, aspartame, and magnesium stearate.
	www.rxlist.com /cgi/generic3/monteluk.htm (194 words)

	Clipbank
		Sodium is heated and added to oxygen to form white sodium oxide.
		Sodium is used in street lamps and nuclear reactors.
		Sodium is responsible for the yellow glow in some street lamps.
	www.channel4.com /learning/microsites/C/clipbank_marketing/sci/taster/sci0243130103.html (349 words)

	Mechanisms underlying induction of heme oxygenase-1 by nitric oxide in renal tubular epithelial cells -- Liang et al. ...
		Physiological chemistry of nitric oxide and its metabolites: implications in inflammation.
		Effects of nitric oxide on catalytic iron and heme degradation by heme oxygenase.
		Nitric oxide: a mediator in rat tubular hypoxia/reoxygenation injury.
	ajprenal.physiology.org /cgi/content/full/279/4/F728 (5430 words)

	GCSE REACTIVITY SERIES of METALS Revision Notes at Doc Brown's Chemistry Clinic. btmrnwp reactions reaction equation ...
		Sodium was first extracted in 1807 by electrolysis of the molten chloride NaCl.
		Theoretically its quite a reactive metal but an oxide layer is readily formed even at room temperature and this has quite an inhibiting effect on its reactivity.
		rust is a hydrated iron(III) oxide formed from the reaction with oxygen and water (the equation is not meant to be balanced and the amount of water x is variable, from dry to soggy!).
	www.wpbschoolhouse.btinternet.co.uk /page03/Reactivity.htm (4168 words)

	Minerals by Name (complete list)
		AJOITE (Hydrated Potassium Sodium Copper Aluminum Silicate Hydroxide)
		JOAQUINITE (Barium Sodium Cesium Titanium Niobium Iron Silicate Hydroxide Fluoride)
		LEIFITE (Hydrated Sodium Beryllium Aluminum Silicate Hydroxide Fluoride)
	mineral.galleries.com /minerals/byname.htm (417 words)

	Sodium India, Silicate India, Sodium Silicate India, Sodium Oxide India, Liquid Sodium Silicate India, Silica Sand ...
		Because of its unique properties, sodium silicate is used in various application to manufacture Silica Gel, tooth paste, precept silica, Zeolite, construction chemicals, oil field chemicals, paints, pigments, paper making, paper cones and tubes, foundry fluxes.
		In addition because of its binding properties, sodium silicate is used in water proofing in Dams and road construction.
		Sodium Silicate is a best water proofing agent and it is also used in cement industries.
	www.shreesaibabachemicals.com /uses.htm (127 words)

	Search Results for sodium oxide - Encyclopædia Britannica
		one of several oxides of nitrogen, a colourless gas with pleasant, sweetish odour and taste, which when inhaled produces insensibility to pain preceded by mild hysteria, sometimes laughter.
		This substance, usually prepared by heating the cobaltic hydroxide that is precipitated from cobalt-containing solutions by sodium hypochlorite, has a number of important uses in the glass and...
		It is composed of about 70 percent silica (silicon dioxide), 15 percent soda (sodium oxide), and 9 percent lime (calcium oxide), with much smaller amounts of...
	www.britannica.com /search?query=sodium+oxide (441 words)

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