The term 'Rusting Agent' is a general term used to describe an oxidant and OXIDE. An oxidant is a substance that causes oxidation, which is a chemical reaction that transfers electrons from one atom to another. OXIDE is a compound formed when oxygen combines with another element. Rusting agents are typically oxygen-containing compounds such as iron OXIDE, which is the main component of rust. Rusting agents can also be other compounds such as nitrates, sulfates, and chlorides.