What are the hazardous byproducts of burning naphtha, such as the fire at Intercontinental Terminals Company in Deer Park, Texas Hazardous combustion products (by products of burning) are Carbon monoxide (CO), Carbon dioxide (CO2), Hydrocarbons, and Aldehydes. An aldehyde is an organic compound containing a functional group with the structure −CHO, consisting of a carbonyl center (a carbon double-bonded to oxygen) with the carbon atom also bonded to hydrogen and to an R group. Aldehydes are considered toxic and poisonous. Cardinal News: Chemical Tank Fire at Intercontinental Terminals Company on Independence Parkway, Deer Park, Texas