Also known as sodium caseinate sodium caseinate, casein sodium, based on fresh milk as raw material, condensation method using acidic content in milk of about 2.5% of the casein protein purification, and then made alkaline sodium. It is widely used in meat products, bakery foods, fresh cream, margarine, salad dressing, coffee, companion, baby food, cheese analogues, dessert, beverage, pharmaceutical, tobacco, cosmetics, daily chemical industry.