Dinitrogen pentoxide is easily deliquescent and can decompose above 10℃ to produce poisonous gas nitrogen dioxide and oxygen, but it is more stable below -10℃. Nitrogen pentoxide will cause combustion and explosion when it meets high temperature and flammable objects. Water or foam can be used to extinguish the fire caused by Nitrogen Pentoxide. Nitrogen pentoxide is a strong oxidizer and reacts with water to form strong acids.
