What is a Oxalic Acid?

Oxalic acid is an organic compound with the chemical formula C₂H₂O₄. It is a colorless, crystalline solid that has a sour taste. Oxalic acid occurs naturally in many plants, including spinach, rhubarb, and sugar cane, and is also produced in the human body as part of metabolic processes. The primary industrial uses of oxalic acid include as a cleaning agent and bleaching agent. It is also employed in the polishing of metals such as iron and copper, helping to remove rust and stains from metal surfaces. In addition, oxalic acid can serve as a reducing agent or neutralizer in chemical reactions. The salt form, calcium oxalate, is known for its association with kidney stone formation in the medical field.

However, oxalic acid is toxic, and ingestion can be harmful to health. At high concentrations, it is corrosive and can irritate the skin and eyes, requiring careful handling.

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