The objectives of this study is to adsorb 2, 6-dichloro phenol indophenol sodium salt using nano magnesium oxide as a nano surface.The adsorption of dyes by using the nanoparticles is a modern and effective way to remove contaminants from their solutions.The UV spectrophotometer was used to follow the dye concentrations in the water solution after mixing them with 0.1 g of MgO and different concen...