Food additive sodium bicarbonate, chemcial formular NaHCO3, product is white fine crystalline, odorless, salty, is stable at room temperature, mainly used in the food industry as additives, foam in rubber industry, antacids in the pharmaceutical industry, generating agent in fire-fighting equipment, chelating agent in detergent, and CO2 occurred agent in film producer, detergents and soft drinks, beer, beverage.