Phosphorus is a non-metal element with chemical symbol P and atomic number 15. Phosphorus is a solid element at normal pressure and temperature, it has 4 allotropes, yellow (or white), red, black, and purple. The much stable allotrope is the White one, but it is incredibly reactive in the air, burns vigorously, in fact it is alway put under pure distilled water. The red allotropes is an amorphous flammable powder, the black and purple are incredibly expensive and rare, we seldom offer them.
High purity and absolutely rare Black Phosphorus element 15 sample allotrope, solid piece of 0.1 gram 99,999% sealed in ampoule and placed inside our labeled glass vial. Pure black phosphorus allotrope sample.