White phosphoros bombs use one of the allotropes of phosphorous. They are used as incendiary weapons. White phosphorous is very reactive, and will ignite, when it comes in contact with the oxygen in the air. It will burn with a white flame, and heat up to 1,300 °C (2,370 °F). Burning white phosproous will also produce a lot of toxic white smoke. While the fire can be extingished with water, the phosphorous will soon re-ignite. For this reason, sand should be used to extinguish it.