CMC is a kind of ionic linear macromolecule substance, white or light yellow fibrous powder, non-toxic, tasteless, soluble in cold water, be transparent sticky solution, help widely than food processing, drinks, textile, papermaking, oil drilling, daily chemical, paint, cigarette, building materials, ceramic, mosquito-repellent incense, detergents and other industrial, unique thickener adhesives, emulsifier, sizing agent, absorbent agent, decentralized, sc, puffing sex fixing agent, retarder, excipients in each industry play its own part, commonly known as the "industrial monosodium glutamate".