1. The propellent is at least one of trichlorofluoromethane, dichlorodifluoromethane, dichlorotetrafluoroethane, nitrogen and carbon dioxide.

2. And, this one here, some of you might recognize, is dichlorodifluoromethane. It's also known as a CFC.

3. Some of these compounds, especially trichlorofluoromethane (Cfc-11) and dichlorodifluoromethane (Cfc-12), found use as aerosol-spray propellants, solvents, and foam-blowing agents