Formic acid (English: Formic acid) is also known as the Hcooh, the chemical formula. Ants and bees, such as the membrane-fin insect secretion containing the ant acid, the original distillation of ants in the process of making ant acid, it has this name. Formic acid has a colorless and stimulating odor, and corrosive, the human skin after contact will be foaming and redness. Melting point 8.4 ℃, boiling point 100.8 ℃. Because of the special structure of formic acid, one of its hydrogen atoms is directly connected with the carboxyl groups. Also can be seen as a hydroxyl formaldehyde. Thus formic acid has the properties of both acids and aldehydes. In the chemical industry, formic acid is used in rubber, pharmaceuticals, dyes, leather industries.