Zinc layered hydroxide 2 (3 chlorophenoxy)propionic acid 1 2-(3-chlorophenoxy) propionate 1 4 (2,4 dichlorophenoxy)butyric acid 1 4-(2,4-dichlorophenoxy) butyrate 1 Cytotoxicity 1 Delayed-Action Preparations 1 Herbicides 1 Hydroxides 1 Nanostructures 1 Optical properties 1 Simultaneous release 1 Sunscreen 1 X ray powder diffraction 1 Zinc 1 Zinc Compounds 1 Zinc oxide 1 anion 1 aqueous solution 1 article 1 chemical structure 1 chemistry 1 controlled release formulation 1 correlation coefficient 1 delayed release formulation 1 herbicide 1 hydroxide 1 infrared spectroscopy 1 intercalation complex 1 nanohybrid 1