The input files used for GROMACS and BRICK software in this work has been uploaded. The dataset contains .itp files for the H2O2 forcefields used and the .mdp file used for a NPT run on aqueous H2O2 solution. GROMACS was used to determine the densities, viscosities and diffusion coefficients of H2O2 in water. Also, BRICK input files (forcefield.in, settings.in, topology.in, H2O2, water, restart.in and weightfunction.in) has been uploaded. BRICK was used to calculate the solubility (Henry coefficient) of H2O2 in water.