User can create, shape and manipulate Phosphorus, a highly reactive, poisonous, nonmetallic element occurring naturally in phosphates, especially apatite, and existing in three allotropic forms, white (or sometimes yellow), red, and black. Violet phosphorus is a form of phosphorus that can be produced by day-long annealing of red phosphorus above 550 °C. It does not ignite in air until heated to 300 °C, is insoluble in all solvents, is not attacked by alkali and reacts only slowly with halogens. It can be oxidised by nitric acid to phosphoric acid.