4-Nonylphenol Diethoxylate (9016-45-9)

4-Nonylphenol Diethoxylate (NPDiEO) is a nonionic surfactant derived from nonylphenol, a type of alkylphenol, through a process called ethoxylation, where two ethoxy groups are added to the phenolic hydroxyl group. It typically appears as a clear to slightly yellow liquid with a mild odor. NPDiEO is widely used in industrial applications due to its effective emulsifying, wetting, and dispersing properties. It is commonly found in detergents, cleaning agents, agrochemical formulations, and paint additives. Additionally, it is used in the textile industry for scouring and finishing processes, as well as in cosmetic products where it serves as an emulsifier and stabilizer. Despite its versatility, NPDiEO and its breakdown products, such as 4-nonylphenol, are recognized as endocrine disruptors, raising environmental and health concerns. This has led to increasing regulatory scrutiny and restrictions on its use in some regions.