danger sign to spontaneous combustion

accident air amount attention bid button caution chemical chemically chemistry coal combustion contact damage danger diamond environmental fire fish flame flammable found hazard hazardous health heating icon ignite including industrial injury label law liquid logistics material meal mixtures objects phosphorus pollutant pollutants risk rule safety security self sign signs solution solutions spill spontaneous spontaneously stickers substance substances symbol symbols tankers transport transportation transporters varnishes warning watch white