Guar gum is water soluble non-ionic plant polysaccharide collected from the fruit seeds of Cyamopsis Tetragonoloba and have been used to synthesize nanohydrogel with the introduction of 2-hydroxyethyl methacrylate (HEMA), acrylamide (AM) and chicken eggshell powder. The equilibrium water content (EWC) of the nanohydrogel were measured at a pH range of 3.6 –10.5 and an optima EWC has been reported at pH 8.4 for biomedical application. The egg shell based Nano hydrogel exhibited good biodegradability property. The prepared materials can be used as a probable super-adsorbent for numerous ionic contaminants present in waste water. The large water content capacities and with large pore sizes of the synthesized nanohydrogel have applications for water saving and prevention of soil erosion in desert localities