Using the assumption of concentration independency, partial functions are calculated from experimental interference functions of molten Cu-Sb alloys reported earlier. The partial radial distribution functions yield partial coordination numbers from which by a weighted sum the total coordination numbers can be calculated. The comparison of these calculated values with the coordination numbers obtained directly from the total RDF shows good agreement. The partial coordination numbers confirm the compound formation in the melts of certain composition, whereas the tendency for segregation existent in the concentration range from 61 to 90 a/o Sb is not indicated by these numbers. The distancesrIgiven by the partial RDF can be composed by a weighted sum which shows good agreement with the experimental values.