Iron(II) sulfate, also known as ferrous sulfate and as copperas (FeSO₄) is an example of an ionic compound. It is found in various states of hydration (FeSO₄·H₂O, FeSO₄·4H₂O, FeSO₄·5H₂O, FeSO₄·7H₂O); the heptahydrate is also called green vitriol, copperas, or melanterite (a mineral that commonly occurs with pyrite). Iron(II) sulfate has a blue-green color, monoclinic crystal structure, and is water-soluble. Its molecular weight is 151.9026 g/mol. Its melting point is 64°C, and at 90°C it loses water of hydration to form the monohydrate, a white powder known as the mineral szomolnokite when it occurs naturally. Iron sulfate pentahydrate forms the mineral siderotil. Jump to: navigation, search 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. ... Jump to: navigation, search General Name, Symbol, Number sulfur, S, 16 Chemical series nonmetals Group, Period, Block 16, 3, p Appearance lemon yellow Atomic mass 32. ... Jump to: navigation, search General Name, Symbol, Number oxygen, O, 8 Chemical series nonmetals Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ... Jump to: navigation, search In chemistry, an ionic compound is a chemical compound in which ions are held together in a lattice structure by ionic bonds. ... Hydrates are compounds formed by the union of water with some other substance, generally forming a neutral body, as certain crystallized salts. ... Jump to: navigation, search General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... It has been suggested that this article or section be merged into sulfuric acid. ... Jump to: navigation, search The mineral pyrite, or iron pyrite, is iron disulfide, FeS2. ... In crystallography, the monoclinic crystal system is one of the 7 lattice point groups. ... Quartz crystal A crystal is a solid in which the constituent atoms, molecules, or ions are packed in a regularly ordered, repeating pattern extending in all three spatial dimensions. ... Jump to: navigation, search Water (from the Old English word wæter; c. ... The molecular mass of a substance (less accurately called molecular weight and abbreviated as MW) is the mass of one molecule of that substance, relative to the unified atomic mass unit u (equal to 1/12 the mass of one atom of carbon-12). ... Jump to: navigation, search The melting point of a solid is the temperature at which it changes state from solid to liquid. ...

Iron(II) sulfate is prepared commercially by oxidation of pyrite or by treating iron with sulfuric acid. It is used in the manufacture of inks, in wool dyeing as a mordant, and in water purification as a substitute for aluminium sulfate. It can also be used to treat iron deficiency. Jump to: navigation, search 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. ... Jump to: navigation, search Sulfuric acid (British English: sulphuric acid), H2SO4, is a strong mineral acid. ... An ink is a liquid containing various pigments and/or dyes used for colouring a surface to render an image or text. ... Wool in a shearing shed Long and short hair wool at the South Central Family Farm Research Center in Boonesville, AR Wool is the fiber derived from the hair of domesticated animals, usually sheep. ... Jump to: navigation, search Yarn drying after being dyed in the early American tradition, at Conner Prairie living history museum. ... Jump to: navigation, search Look up Mordant on Wiktionary, the free dictionary A mordant is a substance used to set dyes. ... Jump to: navigation, search Water purification, or drinking water treatment, is the process of removing contaminants from surface water or groundwater to make it safe and palatable for human consumption. ... Aluminium sulfate is a widely used industrial chemical. ... Jump to: navigation, search // Introduction Iron deficiency is the most common known form of nutritional deficiency. ...

In the finishing of steel prior to plating or coating, the steel sheet or rod is passed through pickling lines of sulfuric acid. This produces large quantities of iron(II) sulfate as a waste product. Jump to: navigation, search The old steel cable of a colliery winding tower Steel is a metal alloy whose major component is iron, with carbon being the primary alloying material. ...

Ferrous Sulfate: An iron compound used to treat iron-deficiency anemia.