Sodium dodecyl ether sulfate (AES,SLES) is an anionic surfactant with excellent performance, and its dosage is second only to LAS. It has excellent decontamination, emulsification, wetting, solubilization and foaming properties, good solubility, good thickening effect, wide compatibility, strong hard water resistance, high biodegradation, and low irritation to skin and eyes. Widely used in liquid detergents such as meal washing, shampoo, foam bath lotion, hand sanitizer, etc. AES can also be used in washing powder and heavy-duty detergent. Partial replacement of LAS with AES can not only use less or no phosphate, but also reduce the amount of total active substances. It can also be used as lubricant dyeing aid, detergent, foaming agent, degreasing agent, etc. for textile printing and dyeing, petroleum, leather and other industries.