Rust removers are formulated to remove rust and other forms of corrosion from metal. It works by reacting with the rust to dissolve it and prevent further damage to your belongings. The most commonly used rust removing chemical is phosphoric acid. The solution creates a chemical reaction when applied to rust converting it to a water-soluble compound that can be scrubbed away quickly and easily. Rust occurs when iron and other ferrous (containing iron) metals oxidize. When oxygen, water, and iron meet, a subtle and invisible chemical process occurs that causes electrons to move and turns iron into iron oxide, also known as rust. Salt water in coastal regions or from winter road salt, as well as acid rain in some urban or industrial areas, are known contributors that speed up oxidation. Wide range of different chemicals are used to handle different kinds of rust .