CMC is used as the additive in food products, and widely used in cold products, lactic acid drinks, solid drinks, fruit juice, jam, spices, biscuits, instant noodles, ice creams, breads, pastries, bakery products and meat products. It mainly has the effects of thickening, emulsifying, suspending, stabilizing, preserving shape, filming formation, puffing, improving taste, retaining freshness, acid proof and health care. It can replace the effects of guar gum, gelatin, pectin, agar and sodium alginate in food production.