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Topic: Ferrous ferric oxide

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Iron oxide

Maghemite

Ferric oxide

Ferrous oxide

Hematite

Ferrite

Oxide

Iron

Auckland Grammar School

Chemical formula

Oxidation

Iron oxide

	Iron - LoveToKnow 1911
		Ferric oxide is employed as a pigment, as jeweller's rouge, and for polishing metals.
		Ferrous fluoride, FeF21 is obtained as colourless prisms (with 8H2O) by dissolving iron in hydrofluoric acid, or as anhydrous colourless rhombic prisms by heating iron or ferric chloride in dry hydrofluoric acid gas.
		Ferrous bromide, FeBr2, is obtained as yellowish crystals by the union of bromine and iron at a dull red-heat, or as bluish-green rhombic tables of the composition FeBr26H2O by crystallizing a solution of iron in hydrobromic acid.
	www.1911encyclopedia.org /Iron (5951 words)

	Manufacture of iron oxides - Patent 3974267
		Ferrous hydroxide, formed from ferrous sulfate and sodium hydroxide at high alkalinity, is air-oxidized at a high rate to form ferric hydroxide seed crystals.
		After the ferrous hydroxide (or ferrous carbonate), as a thin slurry, is formed, an oxygen-containing gas, such as air or oxygen-enriched air, is bubbled through the slurry to oxidize the ferrous hydroxide to ferric hydroxide (or hydrated ferric oxide).
		When from approximately 15 to about 40% of the ferrous hydroxide (or carbonate) is converted to hydrated ferric oxide, as a result of the fairly vigorous oxidation and growth described above, the aeration rate is reduced, to allow the hydrated ferric oxide seeds to grow, through the conversion of the residual ferrous hydroxide.
	www.freepatentsonline.com /3974267.html (2743 words)

	IRON [symbol Fe, atomi... - Online Information article about IRON [symbol Fe, atomi...
		Ferrous chloride, FeCl2, is obtained as shining scales by passing chlorine, or, better, hydrochloric acid gas, over red-hot iron, or by reducing ferric chloride in a current of hydrogen.
		Pyrite may be prepared artificially by gently heating ferrous sulphide with sulphur, or as brassy octahedra and cubes by slowly heating an intimate mixture of ferric oxide, sulphur and sal-ammoniac.
		Ferrous salts also give a bluish white precipitate with ferrocyanide, which on exposure turns to a dark blue; ferric salts are characterized by the intense purple coloration with a thiocyanate.
	encyclopedia.jrank.org /INV_JED/IRON_symbol_Fe_atomic_weight_55.html (6722 words)

	Process for making iron oxide of controlled particle size - Patent 4201761
		A process for preparing a hydrated ferric oxide of large particle size useful for conversion to magnetic iron oxide which comprises continuously adding an oxygen-containing gas to a vigorously agitated suspension of ferric oxide at a temperature between room temperature and about 75.degree.
		While magnetic iron oxides having a crystal size of up to one micron are sold commercially for inexpensive audio tapes, higher quality recording tapes employ magnetic iron oxides with a crystal size of from about two to four microns.
		It has now been found that magnetic iron oxides may be prepared in a manner which enables particle size of the crystals to be controlled to give large size particles and it is possible to produce product crystals which have a particle size of from about one to about twenty microns in length.
	www.freepatentsonline.com /4201761.html (1300 words)

	Iron - Printer-friendly - MSN Encarta (Site not responding. Last check: 2007-09-29)
		It is obtained in large quantities as a by-product in pickling iron and is used as a mordant in dyeing, as a tonic medicine, and in the manufacture of ink and pigments.
		Ferric oxide, an amorphous red powder, is obtained by treating ferric salts with a base or by oxidizing pyrite.
		Ferric chloride, obtained as dark-green, lustrous crystals by heating iron in chlorine, is used in medicine as an alcoholic solution called tincture of iron.
	ca.encarta.msn.com /text_761567901___6/Iron.html (273 words)

	Iron oxide - Wikipedia, the free encyclopedia
		Iron(III) oxide or ferric oxide (Fe) known in its natural state as hematite (also 'haematite'), but also purified for use as a coating in magnetic audio and computer media, where it is known as ferric oxide.
		This is the form of iron oxide most commonly seen on corroded iron and steel structures ranging from bridges to automobile bodies, and is extraordinarily destructive.
		Iron(II,III) oxide or ferrous ferric oxide (Fe), better known as the fl-coloured mineral magnetite or lodestone also seen on Mars.
	en.wikipedia.org /wiki/Iron_oxide (264 words)

	New Jersey Scuba Diver - Artifacts & Shipwrecks - Iron, Steel & Rust
		O, sometimes called green vitriol, is a compound formed by the reaction of dilute sulfuric acid (formerly called oil of vitriol) with metallic iron; it is used in the manufacture of ink, in dyeing, and as a disinfectant.
		O, is a yellow-brown crystalline compound used as a mordant in dyeing and as an etching compound.
		The chemical mechanism of rusting is not fully known, but is thought to involve oxidation of metallic iron to ferrous ion (Fe++) and reaction of the ferrous ion with oxygen and water to form rust.
	njscuba.net /artifacts/matl_ferrous.html (3078 words)

	iron
		Ferrous iron is soluble as a cation, ferric iron is not.
		However, ferric iron can form soluble complexes with many inorganic and organic ligands, including compounds that are the byproducts of the biodegradation of aromatic petroleum hydrocarbons (catechols, which are organic acids resulting from aromatic ring cleavage).
		As a rough rule of thumb amorphous ferric oxide is capable of adsorbing 0.5 milli moles of ionic material per gram.
	2the4.net /iron.htm (1070 words)

	Merox Ferric Oxide - Merox
		Water, ferrous chloride and residue acid is spray roasted in a vessel furnace.
		Ferric oxide is produced using a spray-roasting process.
		Classification of Merox Ferric Oxide is reverified after densifying and bagging by the chemical composition of the batch sample automatically collected at the bagging machine.
	www.merox.se /index.pl/ferric_oxide (433 words)

	HighBeam Encyclopedia â“ Free Online Encyclopedia for Reference, Research, Facts
		O, is a yellow-brown crystalline compound used as a mordant in dyeing and as an etching compound.
		Ferric oxide, Fe, is a reddish-brown powder used as a paint pigment and in abrasive rouges.
		The principal ores of iron are hematite (ferric oxide, Fe) and limonite (ferric oxide trihydrate, Fe ·3H
	www.encyclopedia.com /printable.aspx?id=1E1:iron (931 words)

	Dictionary O (Site not responding. Last check: 2007-09-29)
		Nitrous Oxide, Nitric Oxide, Nitrogen Dioxide, Nitrogen Pentoxide, Dinitrogen Tetroxide, Phosphorus Trioxide, and Phosphorus Pentoxide.
		The oxides of nitrogen are formed during high temperature combustion, are present in exhaust gases from these processes and are responsible for the degradation of the quality of air.
		All oxides of nitrogen are polar covalent compounds.
	www.ucc.ie /ucc/depts/chem/dolchem/html/dict/000o1.html (1124 words)

	Metal Conservation
		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 secondary stage, the oxidation of the ferrous ion compounds to a ferric state, is modified in anaerobic environments.
		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)

	Iron
		The red stains on concrete are ferric oxide, usually from reinforcement rods that are not properly protected from the weather.
		Ferrous tannate is obtained by mixing ferrous sulphate and tannic acid (from nut-galls, for example).
		Ferric oxide is the basis for many pigments of earthy colors, generally through forms of the minerals hematite and limonite, but also through the weathering of sandstones containing an iron cement, or of ferruginous shales.
	www.du.edu /~jcalvert/phys/iron.htm (8748 words)

	Iron(II) oxide - Wikipedia, the free encyclopedia
		Iron(II) oxide, also known as ferrous oxide or ferrous iron, is one of the iron oxides.
		The latter term is often used synonymously to ferrous oxide.
		Iron(II) oxide should not be confused with rust, which usually consists of iron(III) oxide (ferric oxide).
	en.wikipedia.org /wiki/Ferrous_iron (173 words)

	Spring 2000
		Black oxide, also known as “gun bluing,” is one of the lowest tech coatings Anoplate applies, yet it is also one of the most popular.
		To the chemist or metallurgist, this common form of iron oxide is ferric oxide, chemical symbol Fe2O3.
		Black oxide is a true conversion coating, where iron in the steel oxidizes directly to form the coating.
	www.anoplate.com /news/pastnews/spring2000/oxide.htm (1250 words)

	Red Iron Oxide, Iranian Red Iron Oxide Hemaite properties (Site not responding. Last check: 2007-09-29)
		Natural red iron oxide is delivered as a red powder or in lumps form.
		Red Iron Oxide (Hematite) was also said to give success in petitions and lawsuits, and to give protection and strength and luck to soldiers.
		Red Iron Oxide (Hematite) was used for thousands of years as amulets and talismans and was used by Egyptians in religious ceremonies.
	www.iranredironoxide.com (1715 words)

	WASTE FERROUS SULPHATE USE TO OBTAIN FERRIC OXIDE (Fe2O3) FOR SOFT FERRITES
		The main compound (70-80%) in ferrite is ferric oxide.
		The ferric oxide obtained was tested in soft ferrite preparation with good results.
		Ferric oxide obtained by waste ferrous sulphate purification has a purity, physical and chemical properties similar with ferric oxide imported from Belgium.
	www.environmental-expert.com /articles/article424/ANGER.htm (637 words)

	WoodCentral Articles & Reviews
		Typically, it is a combination of ferrous and ferric oxides, hydroxides, and hydrated oxides and some of these compounds may be present in several crystal forms.
		The ferric iron atoms in the rust begin to reduce to ferrous oxide, which initially results in a mixture of ferric and ferrous oxides.
		No iron was detected and no ferric oxides were detected in the fl material that readily came off on the tape.
	www.woodcentral.com /cgi-bin/readarticle.pl?dir=handtools&file=articles_363.shtml (1873 words)

	Red Iron Oxide, Hematite, Red Iron Oxide Export (Site not responding. Last check: 2007-09-29)
		Red iron oxide (Hematite), with its high Iron content is a very useful mineral and is the primary ore used to create Iron.
		Mineral Co natural Red Iron Oxide from Hourmuz Island is supplied worldwide and meets the exacting criteria of International Standard.
		Synthetic iron oxide powders are valued primarily for their pigmentary and magnetic properties (although not all types of iron oxide are magnetic).
	www.redironoxide.net (1896 words)

	Iron oxide - TheBestLinks.com - Colour, Hematite, Mineral, Oxide, ...
		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 a coating in magnetic audio and computer media, where 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.thebestlinks.com /Iron_oxide.html (209 words)

	Mechanism and Biological Role of Nitric Oxide Binding to Cytochrome c' (Site not responding. Last check: 2007-09-29)
		The binding of nitric oxide to ferric and ferrous Chromatium vinosum cytochrome c' was studied.
		The extinction coefficients for the ferric and ferrous nitric oxide complexes were measured.
		The NO (nitric oxide) binding affinity of the WT ferric form was found to be comparable to the affinities displayed by the ferric myoglobins and hemoglobins.
	pubs.acs.org /cgi-bin/abstract.cgi/bichaw/2002/41/i39/abs/bi020058l.html (277 words)

	galvanize
		Ferric oxide (Fe is a dark red compound occurring naturally as a hematite ore and rust.
		Ferrous oxide (FeO) is a chemically formed powder used in the manufacturing process of steel, heat absorbing glass, and enamels.
		This is a result of the zinc being more electrochemical, attracting oxygen, than the ferrous material causing the zinc to act as a anode protecting the ferrous material.
	www.bsu.edu /web/darodgers/galvanize.htm (3062 words)

	READE Advanced Materials - Iron Oxide Powders (FeO)
		Ochre is the major iron oxide in terms of tonnage.
		Iron oxide materials yield pigments that are nontoxic, nonbleeding, weather resistant, and lightfast.
		Natural iron oxides include a combination of one or more ferrous or ferric oxides, and impurities, such as manganese, clay, or organics.
	www.reade.com /Products/Categories/Iron-Oxide-Powders-(FeO).html (327 words)

	Moonbow # 2
		We also tried cutting it with ferric oxide rust and titanium dioxide and got a nice lavender, and with chromium oxide and titanium oxide and got some grayish blue-greens.
		Ferrous iron fines can be separated out of the regolith with a simple magnet.
		ferric oxide rust and titanium oxide white should be available fairly early as may be calcium oxide white.
	www.lunar-reclamation.org /art/moonbow2.htm (3205 words)

	Gamma Ferric oxide (Site not responding. Last check: 2007-09-29)
		The most common magnetic material used for particulate media is an oxide of iron called gamma ferric oxide or synthetic maghemite (Fe2O3).
		Gamma ferric oxide (gamma-Fe2O3) must be prepared from ferrous oxide (Fe3O4 -synthetic magnetite) by oxidation.
		Unfortunately ferrous oxide (Fe3O4) is a cubic crystal and does not easily form into elongated ellipsoidal particles.
	www.ee.washington.edu /conselec/CE/kuhn/taperecord/gfo.htm (216 words)

	Red Iron Oxide, Hematite, Red Iron Oxide Export (Site not responding. Last check: 2007-09-29)
		Red Iron Oxide Mineral Co is Distributor, supplier, manufacturer, exporter and Warehouse of first Quality of natural Red Iron Oxide world widely.
		Due to their chemical and magnetic properties, iron oxide powders also find significant commercial usage in electromagnetic components, catalysts, toners, magnetic recording media, and other applications.
		Kaolin ore is mixed with other rocks and impurities which have to be separated using various wet and dry processing methods Kaolins are employed in glaze recipes to keep the flint, feldspar, frit and other particles from settling out (the surface chemistry of the particles gives it this ability).
	www.redironoxide.com (2751 words)

	Titanium Dioxide (99/00S14) (Site not responding. Last check: 2007-09-29)
		The most commonly mined forms of titanium as oxide are ilmenite and rutile.
		Ilmenite beach sand concentrates typically contain titanium dioxide in the range of 40-60 percent along with ferrous oxide, ferric oxide, and residual silica.
		Once refined, and developed to the appropriate particle size, the pigment may be finished by coating with inorganic oxides or an organic material to give each grade its unique characteristics, that is, to control such properties as dispersion, dispersion stability, gloss and durability.
	www.chemsystems.com /newsletters/perp/Oct200099s14-abs.cfm (633 words)

	iron: Compounds — FactMonster.com
		O, is a yellow-brown crystalline compound used as a
		Ferric oxide, Fe, is a reddish-brown powder used as a paint pigment and in abrasive rouges.
		Iron rusts readily in moist air, forming a complex mixture of compounds that is mostly a ferrous-ferric oxide with the composition Fe Sections in this article:
	www.factmonster.com /ce6/sci/A0858906.html (160 words)

	ferric oxide
		Specification Nano Ferric Oxide Red Nano Ferric Oxide Black Appearance Red powder Black...
		Oxide - Oxide buyers,Oxide importers,Oxide buyer & importer
		with titania and ferric oxide.Mica-titanium pearl luster pigment...
	www.neis.com /mostpop/terms/ferric_oxide.html (264 words)

	Properties of Iron Oxide (Site not responding. Last check: 2007-09-29)
		There are two different isotopes of iron ions, Fe and Fe thus causing two different possible iron oxide compounds.
		These two compounds are ferrous and ferric oxide, or iron (II) and iron (III) oxide.
		Ferric Oxide- Fe This page will discuss the compound ferrous oxide, not ferric oxide.
	web1.caryacademy.org /chemistry/rushin/StudentProjects/CompoundWebSites/2003/ironoxide/properties.htm (48 words)

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