Define Nonionic surfactant or ethoxylated nonionic surfactant?

Nonionic surfactant refers to the surfactant molecules, which do not undergo ionization when being dissolved in water. The Nonionic surfactant are not in the ionic state in the solution, thereby having high stability and being less susceptible to the effect of strong electrolyte inorganic salts as well as acid and alkalis. Nonionic surfactants have excellent compatibility with other types of surfactants and have excellent solubility (which vary depending on different structures, HLB etc) in both water and organic solvents.