While most large enterprises that manufacture aerosol products have stopped using CFCs in their manufacturing lines consistent with the Montreal Protocol obligations, there is still a real need for small and medium scale aerosol companies to understand the safety considerations related to the conversion of their plants to alternative propellants. This manual provides plant managers and National Ozone Units with critical information related to the safe conversion of aerosol plants to non-CFC propellants, specifically hydrocarbons. The guide presents detailed information about safety, formula adaptations, and effective destenching methods for aerosol production using hydrocarbon aerosol propellants (HAPs).