مونوکسید کربن دارای طیف انفجاری است 12.5% به 74.2%, which pertains to its volume fraction in an enclosed space.
در چنین محیط هایی, once the carbon monoxide and air mixture hits this specific ratio, it will ignite explosively when exposed to an open flame. در زیر 12.5%, the fuel is too scant, and the abundance of air leads to rapid consumption through combustion.