Abstract: The density of aqueous solutions of light fullerene С₆₀ in binary system C₆₀(OH)₂₄–H₂O is studied via pycnometry. The concentration dependences of the molar volumes and partial molar volumes of the components (Н₂О and corresponding fullerenol) are calculated for the binary C₆₀(OH)₂₄–H₂O system at 25°С. The linear sizes and the electrokinetic potentials and mobilities of the associates in the given system are studied via dynamic light scattering.