GLOBAL EXPLAINED on Instagram: "Thums Up can remove corrosion (rust) from metal surfaces primarily because it contains phosphoric acid. This acid is a key ingredient in many commercial rust removers and “rust converters”. How the Process Works Chemical Reaction: The phosphoric acid in the soda reacts with iron oxide (rust) to convert it into iron phosphate. Passivation: This reaction creates a thin, blackish layer of iron phosphate on the metal surface, which helps resist future rusting—a proces