Precipitated sulfur

Sulfur (American spelling den de preferred IUPAC name) anaa sulphur (Commonwealth spelling)Nature Chemistry 1, 333 (2009). doi:10.1038/nchem.301 be a chemical element; e get symbol S den atomic number 16. E be abundant, multivalent den nonmetallic. Under normal conditions, sulfur atoms dey form cyclic octatomic molecules plus de chemical formula S8. Elemental sulfur be a bright yellow, crystalline solid at room temperature. 

Sulfur be de tenth most abundant element by mass insyd de universe den de fifth most common on Earth. Though dem sam times find am insyd pure, native form, sulfur on Earth usually dey occur as sulfide den sulfate minerals. Na e be abundant insyd native form, na dem know sulfur insyd ancient times, na dem mention am for ein uses insyd ancient India, ancient Greece, China, den ancient Egypt. Historically den insyd literature sulfur sanso be called brimstone, wich dey mean "burning stone". Dem dey produce almost all elemental sulfur as a byproduct of removing sulfur-containing contaminants from natural gas den petroleum. De greatest commercial use of de element be de production of sulfuric acid for sulfate den phosphate fertilizers, den oda chemical processes. Dem dey use sulfur insyd matches, insecticides, den fungicides. Chaw sulfur compounds be odoriferous, den de smells of odorized natural gas, skunk scent, bad breath, grapefruit, den garlic be secof organosulfur compounds. Hydrogen sulfide dey give de characteristic odor to rotting eggs den oda biological processes. 

Sulfur be an essential element for all life, almost always insyd de form of organosulfur compounds anaa metal sulfides. Amino acids (two proteinogenic: cysteine den methionine, den chaw oda non-coded: cystine, taurine, etc.) den two vitamins (biotin den thiamine) be organosulfur compounds crucial for life. Chaw cofactors sanso dey contain sulfur, wey dey include glutathione, den iron–sulfur proteins. Disulfides, S–S bonds, confer mechanical strength den insolubility of de (among odas) protein keratin, dem find insyd outer skin, hair, den feathers. Sulfur be one of de core chemical elements den need for biochemical functioning wey e be an elemental macronutrient for all living organisms. 

 References 

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 External links 

Sulfur at The Periodic Table of Videos (University of Nottingham)
Atomic Data for Sulfur, NIST Physical Measurement Laboratory
Sulfur phase diagram , Introduction to Chemistry for Ages 13–17
Crystalline, liquid and polymerization of sulfur on Vulcano Island, Italy
Sulfur and its use as a pesticide
The Sulphur Institute
Nutrient Stewardship and The Sulphur Institute


Category:Chemical elements
Category:Chalcogens
Category:Reactive nonmetals
Category:Polyatomic nonmetals
Category:Agricultural chemicals
Category:Anti-acne preparations
Category:Dietary minerals
Category:Industrial minerals
Category:Inorganic polymers
Category:Native element minerals
Category:Orthorhombic minerals
Category:Minerals insyd space group 70
Category:Pyrotechnic fuels
Category:Chemical elements plus primitive orthorhombic structure
Category:Translated from MDWiki