A series of four sodium ${alpha}-sulfo$ fatty acid allylester oligomers such as sodium ${alpha}-sulfo$ lauric acid allylester oligomer, sodium ${alpha}-sulfo$ myristic acid allyl ester oligomer, sodium ${alpha}-sulfo$ palmitic acid allyl ester oligomer and sodum ${alpha}-sulfo$ stearic acid allyl ester oligomer were examined for surface tension, defloculation effect and emulsifying power. Also critical micelle concentration (cmc) was evaluated. Consequently, these sodium allyl ${alpha}-sulfo$ aliphatic carboxylate aligomers show o/w type emulsifying agent and dispersion effect in 1g/100ml soulution.