Steady, laminar, incompressible thermosolutal natural convection flow of micropolar fluid from an inclined perforated surface with convective boundary conditions is studied. Thermal radiative flux and chemical reaction Nomenclature: , buoyancy ratio parameter; , Biot number; , Concentration of the solute (mol m −3 ); , skin friction coefficient; , real numbers; , wall couple stress; , specific heat at constant pressure (J Kg −1 K −1 ); ∞ , free stream concentration (mol m −3 ); , molecular diffusivity of reactive species (m 2 s −1 )