Surface tension is the tendency of a liquid to resist surface penetration. The values of the surface tension of Ethane-1, 2-diol, 2-Aminoethan-1-o1 and Ethane-1, 2-diamine were determined in this work by the capillary-liquid rise method in aqueous solution as the solvent. The values of the surface excess concentration were obtained by plotting the changes of surface tension with concentrations of these surfactants. This work is meant to assess the film coverage of these surfactants from the values of the surface concentration. The values of the surface tensions of these surfactants showed the order Ethane-1,3-diol (52,60,48, 70, 43, 10, 37.05 and 32.35 Nm-1) < 2-Aminoethan-1ol (59.50, 55.15, 52.60, 48.50 and 44.40 Nm-1) < Ethane -1,2 –diamine (66.40, 62.25, 59.91. 57.76 and 54.31 Nm-1). Thus, the positive values of the surface excess concentration, Гi (mole/m2) obtained from these changes in the values of surface tension, dγ with respect to changes in concentrations, dC (mole/m2) from the relation: Гi (mole/m2) –(1/RT dy/dc) in water as a solvent indicated that the values of dy/dc were of negative values which implied that (i) these surfactants were miscible with water in all concentrations and (ii) the molecules of the surfactants deposited substantially more on the air/water interface than within the bulk solution. These interactions between the surfactant in each case with air/water interface reduced drastically the surface tension of water. Further elucidation of the results herein showed that this occlusion of the air/solution interface by these surfactants produced a considerable decrease in the surface tension with increase in surface excess concentration in the order; Ethane -1, 2-diol (16.2 x 10-2) > 2-Aminoethan-1-ol (12.33 x 10-2) > Ethane -1,2-diamine (8.28 x 10-2). The findings based on the occlusion of the air/solution interface by the surfactants elicit interest for their use as surface-active suppressants against the volatility of perfumes in pyrogen-free water in perfume industry. In this work, these amphiphilic surfactants have proven to be more effective as suppressants than the previously used mono-alcohols.