Between different sulfonation which results in different IFT, standard deviation of these parameters are viscosity : 21.0 - 24.7 pH : 0.11 - 0.13 density : 0.015 - 0.018 IFT : 0.015 - 0.033
viscosity : 21.0 - 24.7 pH : 0.11 - 0.13 density : 0.015 - 0.018 IFT : 0.015 - 0.033