Rhinecote 120 – RC (Rust Converter) is a clear odorless, phosphoric acid based cleaner and corrosion remover formulated for rapid penetration and removal of rust. It imparts a light phosphate coating to steel and iron for better paint adhesion prior to application of primer It is best used wherever rust or rust stains have formed. It is commonly used on steel bars, tubings, on decks, engine rooms, cargo holds, and other metal parts.