Ionic liquids (ILs) have unique physicochemical properties. ILs with long carbon chains are called surface-active ILs, and they have surfactant properties. In this study, we synthesize (1-butyl-3-methylimidazolium lauroyl sarcosinate) BMIM Lausar IL that have surfactant properties. Nuclear magnetic resonance spectroscopy (NMR) was used to confirm the chemical structure of the synthesized IL. The surface tension of BMIM Lausar was determined that it was almost 37.1mN/m. Tween 80 is the most famous commercial surfactant, and we also determine the surface tension of Tween 80. Afterword, we make the binary mixture of Tween 80 and IL-based surfactants. Based on our results, we can conclude that Tween 80 and BMIM Lausar both reduced surface tension and have excellent surface properties when combining and can be used as surfactants in many sectors. © Published under licence by IOP Publishing Ltd.