Choline chloride is an organic substance with a chemical formula of C5H14ClNO. It is white hygroscopic crystals, tasteless, and smells fishy. The melting point is 305°C. The pH of 10% aqueous solution is 5-6, which is unstable in lye. This product is easily soluble in water and ethanol, but insoluble in ether, petroleum ether, benzene and carbon disulfide. Low toxicity, LD50 (rat, oral) 3400 mg/kg. It is used to treat fatty liver and cirrhosis. It is also used as a feed additive for poultry and livestock, which can stimulate the ovaries to produce more eggs, litters and weight gain of poultry and fish.