The technology of Alcohol ether carboxylic acid / carboxylate (易游yy官网) is from the National key project in the Ninth Five Year's Plan by China Research Institute of Daily Chemical Industry. With the general structure of R-(OCH2CH2)nOCH2COONa, 易游yy官网 is a new type of functional anionic surfactant, whose structure is quite similar to soap. Meanwhile, the inserted EO chains make 易游yy官网 show characteristics of both anionic and nonionic surfactant, 易游yy官网 can be used in a wide range of pH value. It not only shows good detergency, emulsifying, dispersion, calcium soap dispersion, foaming, but also performs high resistance to alkali, acid, hard water, high temperature. Besides, the properties of good formulating, non-toxicity, non-irritancy, and biodegradability can be found as well. In addition, the excellent solubilization property makes it suitable for the functional transparent products.