This research investigates the stability of iodotrifluoromethane (CF3I) during storage. For CF3I to be used as a fire extinguishing agent, it must be able to be stored for long periods of time at high pressure in metal containers without degrading and losing its effectiveness. For these experiments, CF3I was placed into cylinders, along with various metal coupons. The cylinders were stored, some at elevated temperatures in an oven, for three years and then placed into storage at ambient temperature for five more years. Infrared spectroscopy was used to analyze the cylinder contents and concentrations at various times during the storage.