Oxalic Acid is apt for the process of cleaning as well as bleaching. This is also crucial for the removal of rust. This is functional as a rust removal agent. It is used to make a water-soluble and stable salt. This is toxic in nature due to its acidic as well as chelating properties. Mishandling of this can lead to nausea, severe gastroenteritis, burns, and vomiting, shock etc. This is especially toxic when taken in. Oxalic Acid Oxalic acid also works as a reducing agent in metal oxides. It can remove tarnish, ink stains and rust. This is a laundry rinse, calcium remover and wood-bleaching agent. It is functional as a dyeing chemical and is apt to produce ink.