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Topic: Potassium oxide

Related Topics

Potassium

Potash

Potassium bicarbonate

Aluminum oxide

Manganese oxide

Potassium chloride

Potassium nitrate

Oxide

Chemical compound

Caustic potash

Potassium dichromate

Potassium carbonate

Oxygen

Iron oxide

Calcium oxide

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	HHMI Lab Safety: LCSS: POTASSIUM (Site not responding. Last check: 2007-10-29)
		Potassium fires must be extinguished with a class D dry chemical extinguisher or by the use of sand, ground limestone, dry clay or graphite, or "Met-L-X®" type solids.
		Potassium should be used only in areas free of ignition sources and should be stored under mineral oil in tightly sealed metal containers under an inert gas such as argon.
		Potassium metal that has formed a yellow oxide coating should be disposed of immediately; do not attempt to cut such samples with a knife since the oxide coating may be explosive.
	www.hhmi.org /about/labsafe/lcss/lcss73.html (722 words)

	NM Epoxy handbook - Concrete and air pollutants (Site not responding. Last check: 2007-10-29)
		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)

	DOE-HDBK-1081-94, Primer on Spontaneous Heating and Pyrophoricity (Site not responding. Last check: 2007-10-29)
		Oxide phases corresponding to sesquioxide (Pu{sub 2}O{sub 3}) and dioxide (PuO{sub 2}) compositions have been identified and are well characterized.
		The principal hazard associated with absorbed water is pressurization of a sealed oxide container through any of several separate processes including evaporation of water, radiolysis to form oxygen and hydrogen, or direct reaction with the oxide to form a higher oxide and hydrogen gas.
		The formation of oxide from metal is accompanied by a large volume expansion (up to 70%) which may bulge or breach the primary container.
	www.eh.doe.gov /techstds/standard/hdbk1081/hbk1081d.html (3708 words)

	Case-Tech
		Potassium Sulphate Powder is a soluble potassium source ideal for use in fertigation and hydroponics.
		Potassium is a major plant nutrient and is an essential component of all living cells and metabolic processes.
		Potassium requirement is greatest at the end of the growing season and is important in improving crop quality, fruit size, shape, colour, firmness and shelf life.
	www.casetech.com.au /commpotsulphate.htm (315 words)

	potassium chloride. The Columbia Encyclopedia, Sixth Edition. 2001-05
		Potassium chloride occurs pure in nature as the mineral sylvite and is found combined in many minerals and in brines and ocean water.
		For agricultural use it is often called muriate of potash; the concentration of potassium chloride in muriate of potash is expressed as a corresponding concentration of potassium oxide (K
		O), i.e., the concentration of potassium oxide that there would be if the potassium were present as its oxide instead of as its chloride.
	www.bartleby.com /65/po/potaschlr.html (253 words)

	Potassium hydroxide - Wikipedia, the free encyclopedia
		The chemical compound potassium hydroxide, (KOH) sometimes known as caustic potash, potassa, potash lye, and potassium hydrate, is a metallic base.
		Advantages of using potassium hydroxide (KOH) and not sodium hydroxide (NaOH) in biodiesel production include: NaOH "clumps" and KOH does not, KOH disolves faster in methanol, the resulting glycerin is thinner using KOH and therefore less likely to plug up the plumbing and pumps, and the glycerin is more biodegradable so it's better for composting.
		A very significant use of KOH in terms of significance to the average person is that alkaline batteries use an aqueous solution of KOH as an electrolyte.
	en.wikipedia.org /wiki/Potassium_hydroxide (476 words)

	[No title] (Site not responding. Last check: 2007-10-29)
		Figure 4 is a plot of zinc oxide concentration vs. aqueous KOH concentration, wherein the zinc oxide solution is prepared both by normal solubilization and by the process of this invention.
		The present invention also provides a composition comprising a solution of zinc oxide in an aqueous potassium hydroxide solution wherein the concentrations of the zinc oxide and the potassium hydroxide in said basic solution of zinc oxide solution are as set forth in Figure 2.
		A composition comprising a saturated solution of zinc oxide in an aqueous potassium hydroxide solution wherein the concentrations of the zinc oxide and the potassium hydroxide in said solution are as set forth in Figure 2.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=03/29146.030410&ELEMENT_SET=DECL (3215 words)

	Ferrates
		Besides the dry fusion of ferric oxide and potassium hydroxide, Fremy also produced potassium ferrate by electrolyzing KOH solution with a cast iron anode and by bubbling chlorine into ferric hydroxide suspended in a potassium hydroxide solution.
		Hrostowski and Scott reported the preparation of 96.9% potassium ferrate by a similar method, using sodium hypochlorite as the oxidizing agent and precipitating potassium ferrate from the sodium ferrate solution obtained by adding solid potassium hydroxide until the solution was saturated.
		It seems that the bulk of the potassium ferrate would be precipitated by 11 molar potassium hydroxide solution while the bulk of the potassium chloride and potassium nitrate impurities would remain in solution.
	www.sciencemadness.org /library/ferrates.html (1193 words)

	potassium chloride on Encyclopedia.com
		POTASSIUM CHLORIDE [potassium chloride] chemical compound, KCl, a colorless or white, cubic, crystalline compound that closely resembles common salt (sodium chloride).
		Dietary sodium, potassium and chloride intake and arterial hypertension.
		Worker load 100kg bags of potassium chloride fertilizer onto a truck at Chearhan Salt Lake Industrial Park 60km from the city of Golmud in China's northwest Qinghai province 14 September 2005.
	www.encyclopedia.com /html/p1/potaschlr.asp (733 words)

	Nitric oxide inhibits potassium transport in the rat distal colon -- Aizman et al. 276 (1): 146 -- AJP - ...
		Involvement of endogenous nitric oxide in the regulation of rat intestinal motility in vivo.
		The role of constitutive and inducible nitric oxide synthase in senna- and cascara-induced diarrhoea in the rat.
		Significance of nitric oxide in the stimulation of intestinal fluid absorption in the rat jejunum in vivo.
	ajpgi.physiology.org /cgi/content/full/276/1/G146 (2856 words)

	The Element Potassium -- Potassium Atom
		sodium and potassium is used as a heat-transfer medium.
		Potassium chloride is used as a substitute for
		Saskatchewan are large deposits of potash which may become important sources of this element and its salts in the future.
	www.worldofmolecules.com /elements/potassium.htm (459 words)

	Is potassium oxide(K2O) safe to use? - Aquatic Plant Central- aquascaping...a living art (Site not responding. Last check: 2007-10-29)
		Neither seachem potassium nor sulphate of potash is potassium oxide.
		It just turns out that potassium oxide (just plain potash, not sulphate of potash) used to be the standard for fertilizers.
		Because of that, the law requires that regardless of the source of potassium in a fertilizer, you express it in terms of the equivalent amount of potassium oxide.
	www.aquaticplantcentral.com /forumapc/science-of-fertilizing/13816-is-potassium-oxide-k2o-safe-use.html#post94529 (596 words)

	Chemical of the Week -- Agricultural Fertilizers
		These numbers indicate the percent by weight of nitrogen, phosphorus oxide, and potassium oxide in the fertilizer.
		The amount of potassium in the fertilizer is the same as it would be if the fertilizer were 15% potassium oxide (K
		Potassium chloride is 52% by weight K. Potash is 83% potassium.
	scifun.chem.wisc.edu /chemweek/AgriFert/agrifert.html (815 words)

	British Eighteenth-Century Chemical Terms - Part 1 (A-H)
		Misture of antimony oxide and potassium antimoniate (Sb ; KSbO
		Oxides of antimony, probably primarily the trioxide (Sb) which forms when antimony ore (Sb) is heated in air.
		Sometimes the oxide was confused with carbonate as the "earth" of gypsum.
	dbhs.wvusd.k12.ca.us /webdocs/Chem-History/Obsolete-Chem-Terms1.html (2430 words)

	Metals and Non-metals in the Periodic Table
		Combustion is the burning of a substance in air or oxygen to produce oxides.
		We find that metals form solid oxides (with ionic bonding) that have high melting points and, in general, non-metals form oxides (with covalent bonding) that have low boiling points.
		Oxides are formed when elements are burned in oxygen.
	www.patana.ac.th /parents/curriculum/Chemistry/units/LR503.html (966 words)

	RQcat.htm
		He weighs out 1.0g of manganese(IV) oxide and he drops it into a flask containing 50 mls of hydrogen peroxide solution.
		Manganese (IV) oxide acts as a catalyst for this reaction.
		Potassium chloride is soluble in water, and manganese(IV) oxide is insoluble.
	www.leekhigh.staffs.sch.uk /science/chemistry/chim/RRfolder/RQcat.htm (497 words)

	Dr. Pasternack :: Watershed Estuary Interactions Research - Long Island Sound Geochemical Investigation
		Trace constituents found were magnesium oxide, titanium oxide, calcium oxide, and potassium oxide.
		In terms of water analysis, the samples were only tested for potassium and magnesium, and in both cases the trend was the reverse of that found in the leachates.
		The fact that in potassium, magnesium, and iron leachate normalized concentrations, and in magnesium water concentrations, the CY1 estuarine regime is closer in quantity to F1 than B1 indicates two possibilities: 1) that it more closely resembles the former than the later or 2) the small river that it includes contributes contaminants to the"box".
	pasternack.ucdavis.edu /salt.htm (1491 words)

	088. Oxide, magnesium (FAO Nutrition Meetings Report Series 40abc)
		Description Potassium hydrogen carbonate occurs as odourless, colourless, crystals or as a white powder or granules.
		Description Magnesium oxide occurs as a very bulky white powder, known as light magnesium oxide, or as a relatively dense, white powder, known as heavy magnesium, oxide.
		Five grams of light magnesium oxide occupy a volume of approximately 40 to 50 ml, while 5 g of heavy magnesium oxide occupy a volume of approximately 10 to 20 ml.
	www.inchem.org /documents/jecfa/jecmono/40abcj46.htm (922 words)

	Growth and Development (Site not responding. Last check: 2007-10-29)
		CERAMIC, DENTAL: a compound of metals (aluminum, calcium, lithium, magnesium, potassium, sodium, tin, titanium and zirconium) and nonmetals (silicon, boron, fluorine and oxygen) that may be used as a single structural component as one of the several layers that are used in the fabrication of a ceramic-based restoration
		Ceramics are nonmetallic, inorganic materials that contain metal oxides whose structure is crystalline, displaying a regular periodic arrangement of the component atoms and may exhibit ionic or covalent bonding.
		Common glass is made of silica sand, sodium oxide and potassium oxide, and by adding aluminum oxide a plate glass is made.
	www.bethesda.med.navy.mil /Careers/Postgraduate_Dental_School/Comprehensive_Dentistry/Pearls/Pearlsa2.htm (3599 words)

	Alchemical and archaic chemistry terms
		nitrous gas: specifically nitric oxide (NO, nitrous air) or a mixture of nitrogen oxides such as that produced by the action of nitric acid on a metal in the presence of air.
		Red varieties of ferric oxide are formed by burning green vitriol in air.
		Potassium carbonate made from the ashes of burnt wood.
	www.levity.com /alchemy/al_term2.html (1704 words)

	potash -- Encyclopædia Britannica (Site not responding. Last check: 2007-10-29)
		The names caustic potash, potassa, and lye are frequently used for potassium hydroxide (see potassium).
		In fertilizer terminology, potassium oxide is called potash.
		potassium hydroxide, a potassium salt that readily dissolves in water to form a strongly alkaline and corrosive solution (see potassium).
	www.britannica.com /eb/article-9061047?tocId=9061047 (610 words)

	QTsyndrome.ch Discussion Board: Potassium/mag-oxide
		There is no hardcore evidence on the value of potassium or magnesium supplement.
		The value has not been proven, but from a theoretical viewpoint it may work.
		I have prolonged qt and my potassium and magnesium are always very low.
	www.qtsyndrome.ch /discus/messages/16/69.html (170 words)

	An Alchemists Glossary of Terms, Definitions, Formulas & Concoctions - Part 2 (I-R)
		Mixture of Antimony Oxychloride and Antimony Oxide (Sb ; Sb SbOCl).
		Chemically, the ocheres are Iron Oxides, or mixtures of Iron Oxides, in varying states of hydration.
		Potassium Acetate (KC In this form, the compound was made from distilled vinegar and salt of tartar.
	www.3rd1000.com /alchemy/alchemyterms2.htm (4219 words)

	Reactions (Site not responding. Last check: 2007-10-29)
		(h) Solutions of potassium permanganate and sodium oxalate are mixed.
		(d) Equal volumes of equimolar solutions of phosphoric acid and potassium hydroxide are mixed.
		(b) Potassium permanganate solution is added to an acidic solution of hydrogen peroxide.
	www.sas.upenn.edu /~tloschia/AP/sheets/reactions.htm (568 words)

	Safety & Health Services - Chemical Compatibilty
		Potassium forms an unstable, explosive peroxide and super oxide coating when stored under mineral oil.
		Separate from water, acids, halogens, silicates, sulfates, nitrates,carbonates, phosphates, oxides and hydroxides of heavy metals, organics, and Teflon.
		Potassium cyanide will absorb moisture from the air and will form a syrup.
	www.bnl.gov /esh/shsd/Programs/Program_Area_Chemicals_Compatibility.asp (4487 words)

	MFA - CAMEO - Print Page
		A flux may lower the melting point, minimize surface tension, coagulate impurities or prevent the formation of oxides.
		- Alkaline fluxes (used for glazes, glass): sodium carbonate (soda), white lead, red lead, potassium carbonate (potash), borax, sodium oxide, potassium oxide and lithium oxide.
		- Acidic fluxes: sodium bisulfate, potassium bisulfate, boric oxide and pyrosulfate.
	www.mfa.org /_cameo/frontend/material_print.asp?name=flux&type=all (103 words)

	British Eighteenth-Century Chemical Terms - Part 3 (S-Z)
		Saponaceous substance from the reaction between potassium carbonate and essential oil of turpentine.
		Potassium acetate (KC) for the most part, but also used for assorted potassium salts.
		A group of mineral solids which are various hydrated silicates, primarily of aluminum, calcium, potassium, and sodium.
	dbhs.wvusd.k12.ca.us /webdocs/Chem-History/Obsolete-Chem-Terms3.html (2622 words)

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