Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental 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.
P 1786 (OTTO) Phosphorous red, 98% Cas 7723-14-0 - used in organic syntheses, manufacture of phosphoric acid, phosphorus trichloride, phosphine, and other compounds.