PROBLEM TO BE SOLVED: To provide a liquid surfactant composition containing polyoxyalkylene alkyl ether sulfuric ester salt at high concentration and having good stability.SOLUTION: The surfactant composition comprises (a) 23-27 mass% of a compound represented by the following general formula (1), (b) 3-7 mass% of ethanol, (c) 66-74 mass% of water, and has excellent fluidity. In the formula RO(AO)nSO3M (1), R represents a 8-24C hydrocarbon group, A represents a 2-4C alkylene group, M represents ammonium or alkanol ammonium, and n represents the number of 0.85-1.35 on an average.COPYRIGHT: (C)2009,JPO&INPIT【課題】ポリオキシアルキレンアルキルエーテル硫酸エステル塩を高濃度で含有し、且つ安定性にも優れた液状の界面活性剤組成物を提供する。【解決手段】(a)下記一般式(1)で表される化合物23~27質量%、(b)エタノール3~7質量%、及び(c)水66~74質量%を含有する流動性が良好な界面活性剤組成物。RO(AO)nSO3M (1)(式中、Rは炭素数8~24の炭化水素基を示し、Aは、炭素数2~4のアルキレン基を示し、Mはアンモニウム又はアルカノールアンモニウムを示し、nは平均値で0.85~1.35の数を示す。)【選択図】なし
