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**Systematic name:** Methanoic acid **Molecular formula:** CH₂O₂ **Chemical formula (condensed):** HCOOH **Molar mass:** 46.02 g/mol **Description:** Formic acid is a colorless, fuming liquid with an acrid odor and corrosive properties. It has high melting and boiling points due to the presence of strong hydrogen bonds. Formic acid exhibits an intense reducing effect and is the simplest and one of the strongest carboxylic acids. **Applications:** Formic acid is used in the production of dyes, for wart removal, and in the rubber industry. It is also used in tanneries for skin decalcification and as a food additive (E236). **Occurrence:** Formic acid is naturally present in the venom of ants and bees, and in stinging nettles.