aerozole

Aerozole is a term sometimes used to describe aerosols, which are systems in which fine solid or liquid particles are dispersed in a gas, typically air. The established scientific term is aerosol; aerozole is an alternative spelling that appears in some sources and product names. An aerosol can consist of a carrier gas and suspended particles or droplets, and it is often produced or delivered by specialized equipment.

Particle size in aerosols varies widely, from nanometers to tens of micrometers. Particle size influences how the material behaves in air and where it deposits in the respiratory system. Particles smaller than about 5 micrometers can be inhaled into the lungs, while larger droplets tend to impact the upper airways or settle onto surfaces. The performance of an aerosol is described by size distribution and concentration, among other factors.

Aerosols are produced by methods such as pressurized canisters with propellants, jet or ultrasonic nebulizers, and mechanical atomizers. Propellants used in consumer and medical products have evolved to reduce environmental impact, with historic CFCs largely replaced by hydrofluoroalkanes or hydrocarbons. Applications are broad and include medicinal inhalers and nebulizers, cosmetics and personal care sprays, paints and coatings, and industrial spray processes.

Safety and regulatory considerations cover inhalation hazards, flammability, and environmental impact. Inhalation exposure can affect respiratory health, and propellants and solvents contribute to indoor air pollutants and volatile organic compounds. Packaging, labeling, and usage instructions are governed by applicable health, safety, and environmental regulations to manage risks and environmental effects.