Aqueous surfactant compositions

An aqueous surfactant composition comprising

• (a) one or more alpha-sulfo fatty acid compound (A) of general formula (I)
• R1CH(SO3M1)COOM2 (I),
• in which the radical R1 is a saturated, linear radical having 10 to 16 carbon atoms wherein a fraction of the compound (A) in which the radical R1 is a decyl or a dodecyl radical, based on the total amount of the compounds (A), is 90% by weight or more, and the radicals M1 and M2, independently of one another, are selected from the group consisting of H, Li, Na, K, Ca/2, Mg/2, ammonium, and alkanolamine,
• (b) one or more N-acyl amino acid compound (B) selected from the group consisting of glycinates of general formula (IIa), sarcosinates of general formula (IIb), α-alaninates of general formula (IIc), and β-alaninates of general formula (IId)
• R23—CO—NH—CH2—COOM13 (IIa)
• R23—CO—N(CH3)—CH2—COOM13 (IIb)
• R23—CO—NH—CH(CH3)—COOM13 (IIc)
• R23—CO—NH—CH2—CH2—COOM13 (IId),
• wherein the radical R23 in the compounds (IIa), (IIb), (IIc) and (IId) is a linear or branched alkyl or alkenyl radical having 7 to 19 carbon atoms and the radical M13 is selected from the group consisting of H, Li, Na, K, Ca/2, Mg/2, ammonium, and alkanolamine,
• (c) one or more compound (C) of general formula (III)
• R4COOM5 (III),
• in which the radical R4 is a linear or branched alkyl or alkenyl radical having 7 to 19 carbon atoms and the radical M5 is selected from the group consisting of H, Li, Na, K, Ca/2, Mg/2, ammonium, and alkanolamine;
• (d) one or more inorganic salt of sulfuric acid (D) of general formula (IV)
• (M6)2SO4 (IV),
• wherein M6 is selected from the group consisting of Li, Na, K, Ca/2, Mg/2, ammonium, and alkanolamine;
• and
• water,
• where the following proviso applies:
• if the aqueous surfactant composition comprises one or more ester sulfonate (E) of general formula (V)
• R2CH(SO3M7)COOR3 (V),
• in which the radical R2 is a linear alkyl radical having 10 to 16 carbon atoms and the radical R3 is a linear or branched alkyl radical having 1 to 20 carbon atoms, where the radical R3 can be branched only above 3 carbon atoms, and the radical M7 is selected from the group consisting of Li, Na, K, Ca/2, Mg/2, ammonium and alkanolamine, then it is the case that compound (A), based on the totality of the compounds (A) and (E), must be present to an extent of 50% by weight or more.