Explanation

CMC is a cellulose derivative which is a beta, D-glucopyranose polymer. It is used as viscosity agent, stabilizer, brightener and expander for food. It is also one of the most common viscous polymers used in medicine and cosmetics. CMC is odorless and soluble in water. The solution is neutral or light alkaline and highly viscous.
CMC is stable at chemicals, heat and light, but if it is heated over 80℃ for a long time, its viscosity will decrease slowly and become insoluble in water. CMC has high emulsifying ability and it forms insoluble precipitation by adding aluminium or iron into the aqueous solution.