Formic acid is the simplest organic acid, present in small amounts in ants and bees, hence it is also known as "formic acid". The molecular formula is HCOOH. It is a colorless, transparent, and pungent fuming liquid that is easily soluble in water, alcohol, and ether. It has strong acidity and reducibility and is an important chemical raw material. It is volatile and undergoes decomposition when heated. There is a risk of combustion when exposed to high heat from a fire. Its vapor and air can form explosive mixtures. Exposure to hydrogen peroxide can cause an explosion. Toxic, inhalation can irritate the lungs and stomach, and excessive inhalation can cause death. The maximum allowable concentration in the air is 5ppm. Relative density: 1.23 (15 ℃/4 ℃); Freezing point: 8.4 ℃; Flash point: 68.89 ℃; Boiling point: 101 ℃; Self ignition point: 600 ℃; Explosion limit: 18% to 57%. When storing, it is important to keep away from sparks and heat sources, and to isolate from oxidants, alkalis, strong acids, H pore forming agents, and cyanide. When loading and unloading, handle with care and do not invert. Prevent water accumulation and packaging damage. For loose and leaked materials, rinse them with water, but wear protective tools when handling them. Immediately rinse with plenty of water if in contact with skin, and reapply ointment if necessary. In case of inhalation poisoning, seek emergency medical attention. Carbon monoxide and sodium hydroxide are commonly used in the production of formic acid in industries such as pharmaceuticals, leather, printing and dyeing, textiles, rubber, and pesticides. The main producing areas in China are Henan, Shenyang, Jiangxi, Jiangsu, Jinan, Guangxi, and other places. The annual export volume is nearly 6000 tons, mainly shipped to Malaysia, Japan, and New Zealand.