Formic acid is an organic compound with the chemical formula HCOOH and a molecular weight of 46.03. It is commonly known as methanoic acid and is the simplestcarboxylic acid. It is a colorless liquid with a pungent odor. Formic acid is classified as aweak electrolyte, but its aqueous solution is weakly acidic and highly corrosive, capable of irritating the skin and causing blisters. It is commonly found in the secretions of bees, certain ants, and caterpillars. It is used as an organic chemical raw material and also serves as adisinfectantandpreservative.