A highly concentrated composition of amine salts of hydrocarbon polyalkoxy sulfates that is flowable at 25 °C, comprising: greater than 80% by weight, in particular greater than 90% by weight, in particular greater than 95% by weight amine salts of hydrocarbon polyalkoxy sulfates of the formula R 4 -O-[EO, PO, AO] n -SO 3 - HNR 1 R 2 R 3+ wherein one, two or three of the substituents R 1, R 2 and R 3 are independently selected from the group: - alkyl having 1 to 14 carbon atoms, - alkenyl having 3 to 18 carbon atoms, - hydroxyalkyl having 2 to 4 carbon atoms, - and mixtures thereof, wherein the hydroxyalkyl is optionally alkoxylated and wherein the remaining substituents are each hydrogen; and - R 4 is/are one or more different C6 to C36 hydrocarbon(s); optionally in a mixture with less than 20% by weight, in particular less than 10% by weight of the above amine salts of hydrocarbon polyalkoxy sulfates in which the alkoxy groups are exclusively EO; at least 0.1 up to less than 5% by weight, in particular 0.2 to 3% by weight, of the non-sulfated polyalkoxylated hydrocarbon R 4 -O-[EO, PO, AO] n - H or of the mixture; up to less than 5% by weight of the non-sulfated hydroxy hydrocarbons R 4 -OH or of the mixture; wherein and together represent 0.1 to 10 % by weight, in particular 0.5 to 5 % by weight, of the composition; wherein the composition comprises less than 2 % by weight of water and wherein the number n of the alkoxy groups EO, PO, AO combined is 2 to 16, preferably 3 to 16, - and the alkoxy groups are selected from: - 1 to 15 propoxy groups and - 1 to 15 ethoxy groups, and optionally - 0 to 10 C4 to C 12- alkyleneoxy groups, and the alkoxy groups are distributed randomly or are present in blocks, or both. greater than 80% by weight, in particular greater than 90% by weight, in particular greater than 95% by weight amine salts of hydrocarbon polyalkoxy sulfates of the formula R 4 -O-[EO, PO, AO] n -SO 3 - HNR 1 R 2 R 3+ wherein one, two or three of the substituents R 1, R 2 and R 3 are independently selected from the group: - alkyl having 1 to 14 carbon atoms, - alkenyl having 3 to 18 carbon atoms, - hydroxyalkyl having 2 to 4 carbon atoms, - and mixtures thereof, wherein the hydroxyalkyl is optionally alkoxylated and wherein the remaining substituents are each hydrogen; and - R 4 is/are one or more different C6 to C36 hydrocarbon(s); optionally in a mixture with less than 20% by weight, in particular less than 10% by weight of the above amine salts of hydrocarbon polyalkoxy sulfates in which the alkoxy groups are exclusively EO; - alkyl having 1 to 14 carbon atoms, - alkenyl having 3 to 18 carbon atoms, - hydroxyalkyl having 2 to 4 carbon atoms, - and mixtures thereof, - R 4 is/are one or more different C6 to C36 hydrocarbon(s); at least 0.1 up to less than 5% by weight, in particular 0.2 to 3% by weight, of the non-sulfated polyalkoxylated hydrocarbon R 4 -O-[EO, PO, AO] n - H or of the mixture; up to less than 5% by weight of the non-sulfated hydroxy hydrocarbons R 4 -OH or of the mixture; - and the alkoxy groups are selected from: - 1 to 15 propoxy groups and - 1 to 15 ethoxy groups, and optionally - 0 to 10 C4 to C 12- alkyleneoxy groups,