Phosphorus Powder -100 Mesh 99%
Phosphorus is a chemical element with symbol P and atomic number 15. As an element, phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Earth. With a concentration of 0.099%, phosphorus is the most abundant pnictogen in the Earth's crust. Other than a few exceptions, minerals containing phosphorus are in the maximally oxidizedstate as inorganic phosphate rocks. Phosphorus is also an important component in steel production, in the making of phosphor bronze, and in many other related products.[69][70]Phosphorus is added to metallic copper during its smelting process to react with oxygen present as an impurity in copper and to produce phosphorus-containing copper (CuOFP) alloys with a higher hydrogen embrittlement resistance than normal copper.
| Phase at STP | solid |
|---|---|
| Density (near r.t.) | white: 1.823 g·cm−3 red: ≈ 2.2–2.34 g·cm−3 violet: 2.36 g·cm−3 black: 2.69 g/cm3 |
| Heat of fusion | white: 0.66 kJ/mol |
| Heat of vaporisation | white: 51.9 kJ/mol |
| Molar heat capacity | white: 23.824 J/(m |