Iron(III) oxide-hydroxide (FeO(OH)), also called hydrated iron oxide and yellow iron oxide, is an oxide-hydroxide of iron. It is a solid material with colors ranging from yellow through dark brown to black. Its CAS number is 20344-49-4[1]. General Name, Symbol, Number iron, Fe, 26 Chemical series transition metals Group, Period, Block 8, 4, d Appearance lustrous metallic with a grayish tinge Atomic mass 55. ... General Name, Symbol, Number oxygen, O, 8 Chemical series Chalcogens Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ... General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... An oxide is a chemical compound of oxygen with other chemical elements. ... Hydroxide is a polyatomic ion consisting of oxygen and hydrogen: OH− It has a charge of −1. ... General Name, Symbol, Number iron, Fe, 26 Chemical series transition metals Group, Period, Block 8, 4, d Appearance lustrous metallic with a grayish tinge Atomic mass 55. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences and alloys. ...

It occurs naturally as minerals goethite, siderogel, feroxyhyte, limonite, and lepidocrocite. It can be anhydrous or hydrated. This article is about minerals in the geologic sense; for nutrient minerals see dietary mineral; for the band see Mineral (band). ... Goethite is a iron bearing oxide mineral found in soil and other low temperature enviroments. ... Feroxyhyte is and oxide/hydroxide of iron, Fe3+O(OH). ... Limonite Limonite Limonite is a ferric hydrate of varying composition, the generic formula is frequently written as FeO(OH)·nH2O, although this is not entirely accurate as Limonite often contains a varying amount of oxide compared to hydroxide. ... Lepidocrocite (FeO(OH)), also called esmeraldite or hydrohematite, is an iron oxide-hydroxide mineral. ... Liquids and solids (powders) are anhydrous if they are without water, i. ... Hydrates are compounds formed by the union of water with some other substance, generally forming a neutral body, as certain crystallized salts. ...

It is also used as a pigment, eg. Pigment Yellow 42 (CAS number 51274-00-1[2]), or C.I. 77492. Pigment Yellow 42 is FDA approved for use in cosmetics and is used in some tattoo inks. In biology, pigment is any material resulting in color in plant or animal cells which is the result of selective absorption. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences and alloys. ... The United States Food and Drug Administration is the government agency responsible for regulating food, dietary supplements, drugs, cosmetics, medical devices, biologics and blood products in the United States. ... Closeup of a womans eye while wearing makeup Cosmetics or makeup are substances to enhance the beauty of the human body, apart from simple cleaning. ... A tattoo is a design or marking made by the insertion of a pigment into punctures or cuts in the skin. ...

Iron oxide-hydroxide is used in aquarium water treatment as a phosphate binder. [3] A tropical display tank at the Georgia Aquarium An aquarium (plural aquariums or aquaria) is a vivarium, usually contained in a clear-sided container (typically constructed of glass or high-strength plastic) in which water-dwelling plants and animals (usually fish, and sometimes invertebrates, as well as amphibians, marine mammals... In chemistry, a phosphate is a polyatomic ion or radical consisting of one phosphorus atom and four oxygen. ...

Its risk and safety phrases are R36 R37 R38 S26 S36.