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Topic: Iron hydroxide

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	Hydroxide - Wikipedia, the free encyclopedia
		Hydroxide is a polyatomic ion consisting of oxygen and hydrogen:
		Hydroxide bases will dissociate into a cation and one or more hydroxide ions in water, making the solution basic.
		The hydroxyl radical, ·OH, is the neutral form of the hydroxide ion.
	en.wikipedia.org /wiki/Hydroxide (217 words)

	Encyclopedia: Hydroxide
		Hydroxide is a functional group consisting of oxygen and hydrogen: -O−H It has a charge of 1-.
		Sodium hydroxide (NaOH), also known as caustic soda or lye, is a caustic metallic base used in industry (mostly as a strong chemical base) in the manufacture of paper, textiles, and detergents.
		Iron oxide pigment There are a number of iron oxides: Iron oxides Iron(II) oxide or ferrous oxide (FeO) The fl-coloured powder in particular can cause explosions as it readily ignites.
	www.nationmaster.com /encyclopedia/Hydroxide (791 words)

	Patent 5296151: Process for the precipitation of phosphate with iron hydroxide
		The iron hydroxide is prepared from natural or technical muds comprising iron in a process which involves dissolving with mineral acid and precipitation with a base.
		The disadvantage connected to the use of iron salts for the precipitation of phosphate is the secondary loading of the waters by soluble halogenides and sulfates.
		The aging stability is the determining criteria for the use of iron hydroxide in the precipitation of phosphate.
	www.freepatentsonline.com /5296151.html (2814 words)

	Martin Dow
		The iron (III) hydroxide polymaltose complex (IPC) is a water-soluble iron oxide, macromolecular complex of polynuclear iron (III) hydroxide and partially hydrolyzed dextrin (polymaltose).
		The polynuclear iron (III) hydroxide cores are superficially surrounded by a number of non-covalently bound polymaltose molecules resulting in an overall complex molecular mass of approximately 52,300 Daltons.
		The iron in the polynuclear “cores” is bound in a similar structure as in the case of physiologically occurring ferritin.
	www.martindow.com /product.asp?PID=15&cPage=1 (637 words)

	Metal Conservation
		Iron fastenings that are bent during the wrecking and sinking, for example, will corrode preferentially at the point of the bend, leaving a void but with good metal remaining at each end.
		When iron is buried in an aerobic soil or exposed on the surface to the air, the ferrous ions initially formed in the corrosion process oxidize to ferric ions, resulting in layers of ferric oxide scale on the metal surface.
		The main difference between exposed and buried iron concretions is the prevalence of magnetite in buried encrustations and the prevalence of ferro-hydroxide and ferric oxide in encrustations exposed to open sea water (North and MacLeod 1987:78), especially in high-energy zones, such as reefs.
	nautarch.tamu.edu /class/anth605/File9.htm (6174 words)

	Patent 5223153: Iron hydroxide removal method (Site not responding. Last check: 2007-10-21)
		Iron hydroxide is particularly difficult to remove from water.
		Iron hydroxide is a gelatinous sticky substance that occupies much larger volumes than its concentration by weight would indicate.
		Although effective to remove most solids, diatomaceous earth is not particularly effective at removing iron hydroxide due to the large amount of small particle size diatomaceous earth required and the rapid increase in pressure drop resulting from the large amount of diatomaceous earth.
	www.freepatentsonline.com /5223153.html (1750 words)

	SPIMACO - Products
		Iron is transported in the blood plasma bound to a B-globulin, transferrin.
		The major function of transferrin is to act as the carrier of iron through the body (transportation to the sites of hemoglobin and myoglobin-synthesis as well as to the cells, producing iron containing enzymes).
		The dosage required may be calculated on the basis of a normal hemoglobin value of 15g/100ml at a blood volume estimated at 7% of the body weight, a hemoglobin iron content of 0.34% and the need for an iron depot of 500mg.
	www.spimaco.com.sa /products/ferosac.html (565 words)

	Iron Oxide Hydroxide (GFO) Phosphate Binders by Randy Holmes-Farley - Reefkeeping.com
		Interestingly, the concentration of phosphate, in marine sediment pore waters whose sediment is iron oxide hydroxide, appears to be controlled to a great extent by phosphate bound to the iron.
		The solubility of iron hydroxide in natural seawater is small, but still significant (0.02 - 2 ppb), although it is largely controlled by the availability of organic ligands.
		The iron hydroxide may, however, nucleate the precipitation of calcium carbonate in sub-optimal places, such as tissue surfaces.
	www.reefkeeping.com /issues/2004-11/rhf/index.php (4357 words)

	iron
		Iron ions as a catalyst in the reaction between persulphate ions and iodide ions
		Reactions of the iron ions with hydroxide ions
		Hydroxide ions (from, say, sodium hydroxide solution) remove hydrogen ions from the water ligands attached to the iron ions.
	www.chemguide.co.uk /inorganic/transition/iron.html (1231 words)

	Newly Approved Drug Therapies (653): Venofer (iron sucrose injection), Luitpold Pharmaceuticals
		Venofer (iron sucrose injection) is a complex of polynuclear iron (III)-hydroxide in sucrose.
		Iron is essential for the synthesis of hemoglobin, which is responsible for the transport of oxygen throughout the body.
		A study evaluating Venofer containing 100 mg of iron labeled with 52Fe/59Fe in patients with iron deficiency showed that a significant amount of the administered iron distributes in the liver, spleen and bone marrow, and that the bone marrow is an iron trapping compartment and not a reversible volume of distribution.
	www.centerwatch.com /patient/drugs/dru653.html (732 words)

	Iron oxide (Site not responding. Last check: 2007-10-21)
		Iron (II) oxide or ferrous oxide (FeO) The fl- coloured powder in particular can cause explosions as it readily ignites.
		Iron (III) oxide or ferric oxide (Fe) known in its natural state as hematite or haematite but also purified for use as coating in magnetic audio and computer media it is known as ferric oxide.
		Iron (II III) oxide or ferrous ferric oxide (Fe) better known as the fl-coloured mineral magnetite or lodestone.
	www.freeglossary.com /Iron_hydroxide (287 words)

	STAR (Site not responding. Last check: 2007-10-21)
		Subsurface filter 'plugging' is not observed in similar iron and manganese removal systems that have been operating for decades and therefore plugging of the aquifer is not a concern.
		Arsenic concentrations were reduced in proportion to the amount of iron removed; at approximately the same 1:20 proportionality observed by the EPA at conventional iron-arsenic treatment plants.
		The principle of operation is based upon the fact that dissolved oxygen moves faster in groundwater than iron; iron has a higher retardation coefficient than dissolved oxygen.
	www.subsurfacetech.com /html/star.html (808 words)

	[No title]
		A nickel(II) nitrate solution is treated with a large excess of 6 M potassium hydroxide.
		Iron filings are heated with excess concentrated hydrochloric acid.
		Manganese(IV) oxide is boiled with 10 M sodium hydroxide.
	people.morehead-st.edu /fs/a.macintosh/redoxhw.doc (1530 words)

	United States Patent Application: 0030073580
		The Micronutrients, which are needed in lesser amounts, are iron, manganese, boron, zinc, copper, molybdenum, sodium, cobalt, chlorine, and nickel.
		Optionally, the invention may be practiced to add at least one substantially pure powdered metal and/or hydroxide and/or carbonate and/or carbonate-hydroxide and/or carbonate-hydroxide-oxide of a known essential micronutrient and/or macronutrient, in order to predictably alter the quantitative proportions of the composition to compensate for the deficiencies of a known soil sample.
		As a further option, the invention may be practiced to substitute more complex derivatives of sulfamic acid for the sulfamic acid reactant of the basic reaction.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=1&f=G&l=50&co1=AND&d=PG01&s1=runkis.IN.&OS=IN/runkis&RS=IN/runkis (7627 words)

	Re: Making Ferric Oxide Using ELECTROLYSIS
		Iron oxide is Fe2O3 and hydrated iron oxide would be iron hydroxide Fe(OH)3.
		If the solution is basic, using sodium hydroxide as the electrolyte, you might get iron hydroxide which might lose water to form iron oxide.
		The iron hydroxide is insoluble, so I do not know whether it will just coat the iron electrode and shut down the whole process.
	www.madsci.org /posts/archives/jan99/916465288.Ch.r.html (170 words)

	Process for the precipitation of phosphate with iron hydroxide - US Patent 5296151 (Site not responding. Last check: 2007-10-21)
		This object is obtained according to the invention by using iron hydroxide with the formula Fe 3.nH.sub.2
		Iron hydroxide is not stable in divalent form, and nor does the trivalent iron hydroxide correspond to the formulae Fe(OH)
		To 100 ml of this phosphate solution with pH 7.5 3 ml of the iron hydroxide suspension were added at 23° C., stirred for 15 minutes and membrane filtrated (pore size 0.2 µm).
	www.patentstorm.us /patents/5296151.html (2774 words)

	2000 Progress Report - AQUEOUS SILICA IN THE ENVIRONMENT: EFFECTS ON IRON HYDROXIDE SURFACE CHEMISTRY AND IMPLICATIONS ... (Site not responding. Last check: 2007-10-21)
		The work was aimed at characterizing iron hydroxide surfaces produced after contact with varying levels of silica in the pH range of 5.0-9.5 and determining how silica impacts removal of arsenic during coagulation.
		The presence of polymeric silica is known to hinder precipitation of iron and manganese, and silica was recently shown to interfere with arsenic removal by coagulation.
		Davis, C.C.; Edwards, M. "Implications of Silica Sorption to Iron Hydroxide: Mobilization of Iron Colloids and Interference with Sorption of Arsenate" in preparation for Environ.
	es.epa.gov /ncer/fellow/progress/98/davisch00.html (528 words)

	Iron(III)oxide
		Since some iron alloys, (like cast iron) can contain carbon and silicone (not soluble in the acid), these can be easily separated by filtration when iron have been dissolved.
		Iron hydroxides will precipitate and first there will form amorphous white mass.
		Theoretically, if electrolysis cell would be 100% efficient and used iron was pure, same amount of iron would be dissolved by 3,6 A in 20 h.
	www.frogfot.com /synthesis/ironoxide.html (877 words)

	Meteorites/Minerals
		Iron meteorites are all metal, stony iron meteorites are about half metal, half stone, and stone meteorites contain small flecks of metal.
		The major difference between iron produced by human activity and meteoritic iron is the presence of the element nickel.
		However, lumps or fragments of man-made iron are common as are the iron-oxide minerals, magnetite and hematite.
	koloheboy.freehosting.net /favorite_links.html (4594 words)

	Hydroxide - Encyclopedia.WorldSearch (Site not responding. Last check: 2007-10-21)
		The World Market for Potassium Hydroxide (Caustic Potash) and Peroxides of Sodium or Potassium: A 2004 Global Trade Perspective
		The World Market for Sodium Hydroxide in Aqueous Solution, Soda Lye, or Liquid Soda: A 2004 Global Trade Perspective
		The World Market for Cobalt Oxides, Cobalt Hydroxides, and Commercial Cobalt Oxides: A 2004 Global Trade Perspective
	encyclopedia.worldsearch.com /hydroxyl_radical.htm (197 words)

	Chem 211 - Tests for Phenols, Amines, and Nitro Groups
		The iron (III) chloride test for phenols is not completely reliable for acidic phenols, but can be administered by dissolving 15 mg of the unknown compound in 0.5 mL of water or water-alcohol mixture and add 1 to 2 drops of 1% aqueous iron (III) chloride solution.
		A positive test is the formation of the red-brown precipitate of iron(III) hydroxide.
		The red-brown to brown precipitate of iron (III) hydroxide (ferric hydroxide) is formed by the oxidation of iron(II) hydroxide (ferrous hydroxide) by the nitro compound, which in turn is reduced to the primary amine.
	www.wellesley.edu /Chemistry/chem211lab/Orgo_Lab_Manual/Appendix/ClassificationTests/phenol_amine_nitro.html (336 words)

	Reduction of aromatic nitrocompounds with hydrazine hydrate in the presence of an iron oxide hydroxide catalyst (Site not responding. Last check: 2007-10-21)
		Reduction of aromatic nitrocompounds with hydrazine hydrate in the presence of an iron oxide hydroxide catalyst
		The catalytic activities of several iron oxides and oxide hydroxides have been tested in the reduction of substituted nitroarenes using hydrazine hydrate as reducing agent.
		An iron oxide catalyst, prepared by rapid precipitation of iron hydroxides from solutions of iron(III)chloride, showed the highest activity mainly due to its large BET surface area compared to other iron oxides.
	www.iri.tudelft.nl /~mossb/summ16.htm (285 words)

	Hydroxide (Site not responding. Last check: 2007-10-21)
		During the course of several prior studies of anesthetic breakdown, we noted (but did not publish) that barium hydroxide lime (BL), but not soda lime, turns...
		The lime that is used to pickle cucumbers is calcium hydroxide, also called slaked or hydrated lime.
		SUMMARY: Albemarle will increase the minimum price of potassium hydroxide 50- percent solution to Euro 300 per metric ton delivered Western Europe to major...
	hydroxide.wikiverse.org (211 words)

	Water Science & Technology 46:4-5 (2002) 43-50 - A. Kornmller et al. - Adsorption of reactive dyes to granulated iron ...
		Adsorption of reactive dyes to granulated iron hydroxide and its oxidative regeneration
		Granulated iron hydroxide (b-FeOOH) is used as a regenerable sorbent and catalyst for reactive dye removal in textile wastewater treatment.
		In oxidative regeneration the previously sorbed reactive dye is catalytically oxidized after activation of hydrogen peroxide to hydroxyl radicals on the FeOOH surfaces to regain adsorption capacity and reuse the sorbents.
	www.iwaponline.com /wst/04604/wst046040043.htm (293 words)

	Directory of open access journals (Site not responding. Last check: 2007-10-21)
		The free form of the iron ion is one of the strongest oxidizing agents in the cellular environment.
		The effect of iron at different concentrations (0, 1, 5, 10, 50, and 100 µM Fe3+) on the normal human red blood cell (RBC) antioxidant system was evaluated in vitro by measuring total (GSH) and oxidized (GSSG) glutathione levels, and superoxide dismutase (SOD), catalase, glutathione peroxidase (GSH-Px) and reductase (GSH-Rd) activities.
		The RBC were incubated with colloidal iron hydroxide and phosphate-buffered saline, pH 7.45, at 37oC, for 60 min.
	www.doaj.org /abstract?id=24565&toc=y (238 words)

	Practical Guidelines (Site not responding. Last check: 2007-10-21)
		Note: the white ppt is zinc hydroxide; the ppt.
		Zinc ions also give a white precipitate with aqueous ammonia, that is soluble in excess.
		NaOH initially or you may miss the white precipitate produced as the precipitate dissolves quite readily in a slight excess of sodium hydroxide.
	jazilahothman.tripod.com /sitebuildercontent/practical/cations.html (122 words)

	Title page for ETD etd-07102000-22360009
		Aqueous silica is present in all natural waters and exhibits a high affinity for the surfaces of iron oxides.
		A second phase of research was aimed at identifying the practical implications of silica sorption to iron hydroxide in natural and engineered systems.
		The concentration of pre-formed iron passing through a 0.45 micron pore size filter at pH 6.0-9.5 increased as the solids aged in the presence of silica.
	scholar.lib.vt.edu /theses/available/etd-07102000-22360009 (279 words)

	Iron oxide hydroxide composite particles, pigment, paint and resin composition - US Patent 6440561 (Site not responding. Last check: 2007-10-21)
		Iron oxide hydroxide composite particles, pigment, paint and resin composition - US Patent 6440561
		Iron oxide hydroxide composite particles, pigment, paint and resin composition
		The iron oxide hydroxide composite particles of the present invention contain no harmful elements and exhibit not only excellent chemical resistances such as acid resistance and alkali resistance, but also excellent heat resistance.
	www.patentstorm.us /patents/6440561.html (57 words)

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