Data for density and viscosity of ternary PEG mixtures of two PEG and water

Let us denote by mw, m1 and m2 the respective mass of water, PEG1 and PEG2 in the solution M1 and M2 are the respective molecular weights of the two PEGs (in g.mol-1). Parameter wtot is the mass fraction of PEG in the solution (wtot = (m1 + m2) / (mw + m1 + m2)). Parameter wPEG1 is the mass fraction of PEG1 (wPEG1 = m1 / (m1 + m2) : when it is equal to 1, solution is a binary solution of PEG1 and water. The last two columns respectively provide the viscosity (in mPa.s) and density (in g.cm-3) of the solutions.