Volatile corrosion inhibitors (VCIs) are chemical agents designed to mitigate the effects of corrosion resulting from exposure to moisture, humidity, and fluctuations in temperature. These corrosion preservatives are formulated to create a protective shield on metal surfaces during storage and transportation, effectively safeguarding them against rust and corrosion.

Rust inhibitors function by establishing a thin, durable barrier on the surfaces of metals, including steel, iron, and aluminium, to shield them from the detrimental impact of corrosive agents. VCI packaging is designed to shield metal components and products from harm and is available in various forms, such as bags, paper, emitters, films, liquids, and aerosols.