In 1929, Norwegian scientist Erik Rotheim patented a way to distribute liquids via an aerosol can for the first ... gas that Rotheim had used as the propellant needed to make the spray can concept ...

Leak Rate. It is common for MDIs to lose propellant during storage. The propellant-leak rate of the test MDIs was compared with that of the controls (Figure 3). The leak rates for the Proventil ...

The main responsible for the hole in the ozone layer, chlorofluorocarbons gases (CFCs), which were used as a refrigerant and propellant in aerosols, have been banned by the Montreal Protocol of 1987.

manufacturers are focusing on developing recyclable and biodegradable aerosol packaging. The push for low-global-warming-potential (GWP) propellants and non-hydrocarbon-based solutions is also ...