What is the function of a propellant in self-pressurized products?

The function of a propellant in self-pressurized products is primarily to act as an inert ingredient that forces the active ingredient out of the container. This mechanism is crucial for ensuring that the product can be applied in a controlled manner and allows for its dispersion in a fine spray or foam. Propellants create the pressure needed to expel the product, facilitating the application process, especially in aerosol formulations.

In the context of self-pressurized products, the propellant does not enhance the effectiveness of the active ingredient, nor is it intended as a primary component providing pest control. Instead, it serves a purely functional role in the delivery system. Additionally, while safety measures against contamination are important in pesticide product design, this function does not pertain to the role of the propellant.