This paper analyzes the mass transfer on unsteady MHD flow of non-Newtonian fluid in horizontal channel with chemical reaction effects. The equations that govern the flow are transformed into non-dimensional form using dimensionless parameters. The non-dimentional equations are solved by implementing He-Laplace method. The influence of diversified flow parameters such as chemical reaction, Schmidt number, Grashof number due to mass transfer, Hartmann number are presented and discussed graphically on different flow fields. An interesting fact is that the velocity and concentration fields diminish due to the increment of chemical reaction parameter. For upsurging data of Schmidt number, velocity and concentration fields diminish. Furthermore, the velocity field decline due to the increment of magnetic parameter.