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Reddish pigment
Iron oxide red is a generic name of a ferric oxide pigment of reddish colors. Multiple shades based on both anhydrous Fe 2O 3 and its hydrates were known
Iron_oxide_red
Class of chemical compounds composed of iron and oxygen
An iron oxide is a chemical compound composed of iron and oxygen. Several iron oxides are recognized. Often they are non-stoichiometric. Ferric oxyhydroxides
Iron_oxide
Chemical compound
of iron for the steel industry. It is also known as red iron oxide, especially when used in pigments. It is one of the three main oxides of iron, the
Iron(III)_oxide
Varieties of the color red
with sacrifice. Spanish red, an iron oxide red also known as torch red, is the color that is called rojo (the Spanish word for "red") in the Guía de coloraciones
Shades_of_red
Chemical compound
Iron(II,III) oxide, or black iron oxide, is the chemical compound with formula Fe3O4. It occurs in nature as the mineral magnetite. It is one of a number
Iron(II,III)_oxide
Traditional pigment produced in Sweden
Falun red or Falu red (/ˈfɑːluː/ FAH-loo; Swedish: falu rödfärg, pronounced [ˈfɑ̂ːlɵ ˈrø̂ː(d)færj]) is a red iron oxide pigment obtained as a byproduct
Falun_red
Pigment
natural ferric oxide (Fe2O3, partially hydrated) obtained from the red hematite. Modern versions are frequently made with synthetic red iron oxide produced
Venetian_red
Earth pigment of characteristic colour
containing a large amount of hematite, or dehydrated iron oxide, has a reddish tint known as red ochre (or, in some dialects in England, ruddle). The
Ochre
Topics referred to by the same term
Red Iron or Iron Red may refer to: Iron(III) oxide, a common red oxide of iron Red Iron, an iron oxide-based ceramic colorant Rust, rusted, or rusty iron
Red_Iron
Traditional Swedish carved, painted wooden horse statuette
widespread than others. It is stoutly carved and was traditionally painted Iron oxide red at first. Now it is usually reddish orange with details and a harness
Dala_horse
Color resembling iron oxide
Rust is a red color resembling iron oxide red. It is a commonly used color on cars and appears roughly the same color as photographic safelights when
Rust_(color)
Common iron oxide mineral
(/ˈhiːmətaɪt, ˈhɛm-/ HE(E)M-ə-tyte), also spelled as haematite, is a common iron oxide compound with the formula Fe2O3 and is widely found in rocks and soils
Hematite
Type of floor covering
even after years of wear. In the past some of these pigments were iron oxide, red lead or lithopone. It gained popularity as a flooring option in the
Linoleum
Chemical compound with an oxygen atom
negatively charged ion). Iron silicate, Fe2SiO4, the mineral fayalite, is one of many examples of a ternary oxide. For many metal oxides, the possibilities
Oxide
Conversion coating for metals
over other coatings is its minimal buildup. A standard black oxide is iron(II,III) oxide (Fe3O4), also called by the name of the ore composed thereof
Black_oxide
Pyrotechnic composition of metal powder and metal oxide
bismuth(III) oxide, boron(III) oxide, silicon(IV) oxide, chromium(III) oxide, manganese(IV) oxide, iron(III) oxide, iron(II,III) oxide, copper(II) oxide, and
Thermite
Process that partially protects steel against rust
reaction with iron on the surface selectively forming magnetite (Fe 3O 4), the black oxide of iron. In comparison, rust, the red oxide of iron (Fe 2O 3),
Bluing_(steel)
Chemical compound
Lead(II,IV) oxide, also called red lead, lead tetroxide, or minium, is the inorganic compound with the formula Pb3O4. A bright red or orange solid, it
Lead(II,IV)_oxide
Hydrated iron oxide mineral
Limonite (/ˈlaɪməˌnaɪt/) is an iron ore consisting of a mixture of hydrated iron(III) oxide-hydroxides in varying composition. The generic formula is frequently
Limonite
Chemical element with atomic number 26 (Fe)
The proverbial red color of the surface of Mars is derived from an iron oxide-rich regolith. Significant amounts of iron occur in the iron sulfide mineral
Iron
Earth pigment
terra di Siena 'earth of Siena') is an earth pigment containing iron oxide and manganese oxide. In its natural state, it is yellowish brown, and it is called
Sienna
Waste product from the production of alumina
the Bayer process. It is composed of various oxide compounds, including the iron oxides which give its red colour. Over 97% of the alumina produced globally
Red_mud
Layered iron-rich sedimentary rock
units of sedimentary rock consisting of alternating layers of iron oxides and iron-poor chert. They can be up to several hundred meters in thickness and
Banded_iron_formation
Powder used to add or alter colour
yellow) Copper pigments: Han purple, Han blue, Paris green Iron oxide pigments: oxide red, Venetian red, Prussian blue, raw sienna, burnt sienna, raw umber,
Pigment
Sugar-based rocket propellant
are iron oxides. Red iron oxide is used most often as it is somewhat easier to obtain than the yellow, brown, or black versions. Brown iron oxide exhibits
Rocket_candy
Chemical compounds containing iron
Iron shows the characteristic chemical properties of the transition metals, namely the ability to form variable oxidation states differing by steps of
Iron_compounds
This is a list of colors sorted by shade. Red is any of a number of similar colors evoked by light, consisting predominantly of the longest wavelengths
List_of_colors_by_shade
Iron in its +3 oxidation state
In chemistry, iron(III) or ferric refers to the element iron in its +3 oxidation state. Ferric chloride is an alternative name for iron(III) chloride
Ferric
Shade of red used on some railway cars
Bureau of Standards circular describes it as based on Indian red, a variety of iron oxide red. The color was then modified by treatment with an alizarin
Tuscan_red
Chemical reaction with oxidation state changes
(/ˈrɛdɒks/ RED-oks, /ˈriːdɒks/ REE-doks, reduction–oxidation or oxidation–reduction) is a type of chemical reaction in which the oxidation states of the
Redox
Earth pigment
earth pigment consisting of iron oxide and manganese oxide; it has a brownish color that can vary among shades of yellow, red, and green. Umber is considered
Umber
Industrial means of refining bauxite to produce alumina
(Al2O3), the rest being a mixture of silica, various iron oxides, and titanium dioxide. The aluminium oxide must be further purified before it can be refined
Bayer_process
Iron oxide-hydroxide mineral
Lepidocrocite (γ-FeO(OH)), also called esmeraldite or hydrohematite, is an iron oxide-hydroxide mineral. Lepidocrocite has an orthorhombic crystal structure
Lepidocrocite
Chemical compound of calcium
inorganic compounds, in which carbonates, oxides, and hydroxides of calcium, silicon, magnesium, aluminium, and iron predominate. By contrast, quicklime specifically
Calcium_oxide
Colorless gas with the formula NO
Nitric oxide (nitrogen oxide, nitrogen mono-oxide, or nitrogen monoxide) is a colorless gas with the formula NO. It is one of the principal oxides of nitrogen
Nitric_oxide
Agate variety
activity. In Montana moss agate the red color is the result of iron oxide and the black color is the result of manganese oxide. The gemstone has also been known
Moss_agate
Chemical compound
yttrium oxide is 27 W/(m·K). Yttrium oxide is widely used to make Eu:YVO4 and Eu:Y2O3 phosphors that give the red color in color TV picture tubes. Y2O3
Yttrium(III)_oxide
Red-colored seep of saltwater flowing from Taylor Glacier in Antarctica
first attributed the red color to red algae, but later it was proven to be due to iron oxides. Poorly soluble hydrous ferric oxides are deposited at the
Blood_Falls
Index of articles associated with the same name
secondary mineral, a product of the oxidation of iron ore minerals, found in brown iron ores ferric oxide — Fe2O3 (oxides of iron), which also occurs naturally
Iron_ochre
Using pyrotechnic metal to join two metal pieces together
prevent separation. Commonly the reacting composition is five parts iron oxide red (rust) powder and three parts aluminium powder by weight, ignited at
Exothermic_welding
Sedimentary rock that contains a substantial proportion of iron ore
are generally known as banded iron formations. The iron minerals comprising ironstones can consist either of oxides, i.e. limonite, hematite, and magnetite;
Ironstone
Naming system for food additives
(white) 172 A E U iron oxides 172(i) A E U iron oxide, black colour 172(ii) A E U iron oxide, red colour 172(iii) A E U iron oxide, yellow colour 173
International Numbering System for Food Additives
International_Numbering_System_for_Food_Additives
Chemical compound – an oxide of copper with formula CuO
oxide is substituted for iron oxide in thermite the resulting mixture is a low explosive, not an incendiary. An example of natural copper(I,II) oxide
Copper(II)_oxide
Chemical compound produced in steel processing
consisting of the mixed iron oxides iron(II) oxide (FeO, wüstite), iron(III) oxide (Fe2O3, hematite), and iron(II,III) oxide (Fe3O4, magnetite). Mill
Mill_scale
Ajka alumina 2010 industrial accident in Hungary
with sodium hydroxide used to dissolve aluminium oxide. Iron(III) oxide, the compound from which the red colour originates, is the main component, but it
Ajka_alumina_plant_accident
Magnesium iron oxide mineral
Magnesioferrite is a magnesium iron oxide mineral, a member of the magnetite series of spinels. Magnesioferrite crystallizes as black metallic octahedral
Magnesioferrite
Former neighborhood of Liverpool, England
area turned red from the ferric oxide left in the sand.[citation needed] St Michael's Church, opened in 1815, was known as the Cast Iron Church because
Cast_Iron_Shore
Chemical compound
bridging oxide at the center of the equilateral triangle. The compound was an early example of a molecular complex of iron that features an oxide ligand
Iron(III)_acetate
Pigments used to color clay and glazes
and oxides of certain metals, characterize most colorants including the commonly used cobalt carbonate, cobalt oxide, chrome oxide, red iron oxide, and
Ceramic_colorants
Form of iron ore deposited in bogs
Bog iron is a form of impure iron deposit that develops in bogs or swamps by the chemical or biochemical oxidation of iron carried in solution. In general
Bog_iron
Cadmium red (PR108): cadmium sulfo-selenide (Cd2SSe). Cerium pigments Cerium sulfide red (PR265). Iron oxide pigments Sanguine, Caput mortuum, Indian red, Venetian
List_of_inorganic_pigments
Precursor to vanadium alloys and industrial catalyst
dominant use for vanadium(V) oxide is in the production of ferrovanadium (see above). The oxide is heated with scrap iron and ferrosilicon, with lime added
Vanadium(V)_oxide
Metal treatment process
electrolytically in nitric acid or by treatment with red fuming nitric acid to form hard black Iron(II,III) oxide. This oxide remains conformal even when plated on wiring
Anodizing
Unrefined sea salt mixed with a red ʻalaea volcanic clay
alternatively referred to as Hawaiian red salt, is an unrefined sea salt that has been mixed with an iron-oxide-rich volcanic clay called ʻalaea, which
Alaea_salt
12th-century church in Zillis, Switzerland
gray) White lead (white, glazes) Red ochre / Iron oxide (red; pink as a glaze) Red lead (pale red) Vermilion (dark red) Green earth (green) Ultramarine
St._Martin's_Church,_Zillis
Topics referred to by the same term
or růst in Wiktionary, the free dictionary. Rust is an iron oxide formed by the reaction of iron and oxygen in the presence of water. Rust may also refer
Rust_(disambiguation)
Slow accumulating oceanic sediment with low biogenic constituents
sediments are typically bright red to chocolate brown in color. The color results from coatings of iron oxide and manganese oxide on the sediment particles
Pelagic_red_clay
Historical purple pigment
as cardinal purple, is the name given to a purple variety of hematite iron oxide pigment, used in oil paints and paper dyes. Due to the cultural significance
Caput_mortuum_(pigment)
Materials used to make red colors in painting
blue, green and yellow parts of white light. Red pigments historically were often made from iron oxides, such as hematite. These pigments have been found
Red_pigments
Natural pigment
reddish tint. This occurs due to the transformation of iron hydroxide into a dark red anhydrous oxide (iron ochre). With controlled calcination of yellow ochre
Golden_ochre
Stone formation in northern Madagascar
formations were revealed in the 1950s after landslides exposed them, and the iron oxide-rich soil gives the landscape its reddish-orange color. It is situated
Tsingy_Rouge
heated in an Iron pot. The crust formed on the lid was ground to powder and boiled with water to remove the Calomel. Calx – Calcium Oxide; was also used
List_of_alchemical_substances
Intensely oxidized, weathered or decomposed rock
erosion-resistant quartz and iron oxides. Although most gossans are red, orange, or yellow, black gossans from manganese oxides such as pyrolusite, manganite
Gossan
Chemical compound
distinct color additive (carmine high tint in the 150 mg tablets and iron oxide red in the 200 mg tablets). Contraindications of elagolix include pregnancy
Elagolix
1804 observation in physical chemistry
iron, and in the red powder there is about 42 g of oxygen for every 100 g of iron. 28 and 42 form a ratio of 2:3. These compounds are iron(II) oxide (Fe2O2)
Law_of_multiple_proportions
Ancient sculpture in Acropolis of Athens
various identifications. Inv no. Akr. 606 In azurite, malachite, and iron-oxide red. Brinkmann, 2011, p. 12. Ashmolean Mus. 310. J.D. Beazley, CVA Oxford
Persian_Rider
Chemical compound
Aluminium oxide (or aluminium(III) oxide) is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. It is the most commonly occurring
Aluminium_oxide
Oxide compound with cations of multiple elements or different oxidation states
ferrosoferric oxide , contains the cations Fe2+ ("ferrous" iron) and Fe3+ ("ferric" iron) in 1:2 ratio. Other notable examples include red lead Pb3O4, the
Mixed_oxide
Production methods of colored glass
soda-lime glass appears colorless to the naked eye when it is thin, although iron oxide impurities produce a green tint which can be viewed in thick pieces or
Glass coloring and color marking
Glass_coloring_and_color_marking
Paleoproterozoic surge in atmospheric oxygen
reducing capacity from ferrous iron, sulfur, hydrogen sulfide and atmospheric methane over nearly a billion years. The oxidative environmental change, compounded
Great_Oxidation_Event
Athletic teams representing the College of the Holy Cross
dispute in the chemistry lab, where he mixed copper sulphate (blue) with iron oxide (red) to produce the color of deep purple. Historically, Holy Cross' major
Holy_Cross_Crusaders
Chatoyant gemstone from the quartz family
composed chiefly of silicon dioxide (SiO2) and is coloured mainly by iron oxide. The specific gravity ranges from 2.64 to 2.71. It is formed by the alteration
Tiger's_eye
Blue pigment
sintering cobalt(II) oxide with aluminium(III) oxide (alumina) at 1200 °C. Chemically, cobalt blue pigment is cobalt(II) oxide-aluminium oxide, or cobalt(II)
Cobalt_blue
Reddish pigment
Pompeian red refers to the color of iron oxide-based mineral pigment with a hue close to red ochre, so named because of its common use in ancient Roman
Pompeian_red
Dark reddish-brown natural earth pigment
pigment, whose reddish colour comes from hematite, a dehydrated form of iron oxide. It was widely used in Classical Antiquity and the Middle Ages for painting
Sinopia
Iron(III) oxide-hydroxide named in honor to the poet Goethe
also /ˈɡoʊθaɪt/) is a mineral of the diaspore group, consisting of iron(III) oxide-hydroxide, specifically the α-polymorph. It is found in soil and other
Goethite
Ore rich in iron or the element Fe
Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from
Iron_ore
Void between celestial bodies
redistribution, slowing of the cardiovascular system, decreased production of red blood cells, balance disorders, and a weakening of the immune system. Lesser
Outer_space
Topics referred to by the same term
Red Sandstone may refer to: Sandstone appearing red due to the inclusion of iron oxides (hematite) Old Red Sandstone, a British lithostratigraphic unit
Red_Sandstone
Chemical compound
reddish-brown iron(III) oxide. Thermolysis of iron(II) sulfate begins at about 680 °C (1,256 °F). 2 FeSO4 Δ→ Fe2O3 + SO2 + SO3 Like other iron(II) salts, iron(II)
Iron(II)_sulfate
Sedimentary rocks containing 15 wt.% or more iron
Antarctica. They are a major source of iron and are mined for commercial use. The main iron ores are from the oxide group consisting of hematite, goethite
Iron-rich_sedimentary_rocks
Chalcedony variety colored by iron oxide
impure variety of silica, usually red, yellow, brown or green in color; and rarely blue. The common red color is due to iron(III) inclusions. Jasper breaks
Jasper
Chemical test
to nitric oxide by iron(II), which is oxidised to iron(III), followed by the formation of nitrosyl ferrous sulfate between the nitric oxide and the remaining
Nitrate_test
Red-orange chalcedony variety
are varieties of the silica mineral chalcedony colored by impurities of iron oxide. The color can vary greatly, ranging from pale orange to an intense almost-black
Carnelian
Metalloprotein that binds with oxygen
(haemoglobin, Hb or Hgb) is a protein containing iron that facilitates the transportation of oxygen in red blood cells. Almost all vertebrates contain hemoglobin
Hemoglobin
White powder insoluble in water
Zinc oxide is an inorganic compound with the formula ZnO. It is a white powder which is insoluble in water. ZnO is used as an additive in numerous materials
Zinc_oxide
Different oxidation states of Oxygen
elevated temperatures to give corresponding oxides. However, some elements, such as iron which oxidises to iron oxide, or rust, Fe2O3, readily oxidise at standard
Oxygen_compounds
Various colors of gold obtained by alloying gold with other elements
e.g. 75% gold with 25% cobalt, form a black oxide layer with heat treatment at 700–950 °C. Copper, iron and titanium can be also used for such effect
Colored_gold
Inorganic compound of Iron
compounds of iron. They are available both in anhydrous and in hydrated forms, which are both hygroscopic. They feature iron in its +3 oxidation state. The
Iron(III)_chloride
Gradual destruction of materials by chemical reaction with its environment
formation of red-orange iron oxides, is perhaps the most familiar example of electrochemical corrosion. This type of corrosion typically produces oxides or salts
Corrosion
Lead minerals and pigments resembling them
(disambiguation) Lead(II) oxide List of inorganic pigments List of colors Red pigments Antimony ochres Cobalt ochres Iron ochres Orange Yellow Edward
Lead_ochre
Abnormal accumulation of iron in the body
organ damage is oxidative stress, as elevated intracellular iron levels increase free radical formation via the Fenton reaction. Iron overload is often
Iron_overload
Iron-storage complex
chemical reactions (i.e., oxidation-reduction reactions) in the body but is toxic when not properly contained. Thus, many methods of iron storage have developed
Hemosiderin
Sedimentary rocks with ferric oxides
are predominantly red in color due to the presence of ferric oxides. Frequently, these red-colored sedimentary strata locally contain thin beds of conglomerate
Red_beds
Thermodynamic principle of metallurgy
oxidation on the diagram will reduce the oxide with the higher Gibbs free energy of formation. For example, metallic aluminium can reduce iron oxide to
Ellingham_diagram
Process for producing steel
turning the iron into steel. Refractories (materials resistant to decomposition under high temperatures)—calcium oxide and magnesium oxide—line the smelting
Steelmaking
Variety of chalcedony with fire-like flashes
silica and iron oxide, filled cracks and cavities in the surrounding rock and solidified into chalcedony layered with crystallized iron oxide. Fire agates
Fire_agate
Chemical compound
technology. Generally, there are three ways to produce hexavalent iron: dry oxidation, wet oxidation, and electrochemical synthesis.[citation needed] The methods
Potassium_ferrate
Chemical compound of a transition metal and nitric oxide
Metal nitrosyl complexes are complexes that contain nitric oxide, NO, bonded to a transition metal. Many kinds of nitrosyl complexes are known, which
Metal_nitrosyl_complex
Iron oxide with a spinel ferrite structure
Maghemite (Fe2O3, γ-Fe2O3) is a member of the family of iron oxides. It has the same formula as hematite, but the same spinel ferrite structure as magnetite
Maghemite
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