Formic acid, commonly, is the simplest carboxylic acid. A colorless liquid with a pungent odor. Weak electrolyte, melting point 8.6 ℃, boiling point 100.8 ℃. Acid is very strong, corrosive, can stimulate the skin foaming. It is found in the secretions of bees, certain ants and caterpillars. It is an organic chemical raw material and is also used as a disinfectant and preservative.