Abstract: A liquid detergent of the present invention contains: component (a): a nonionic surfactant which contains compounds represented by the following formula (1) wherein an average value of m in formula (1) ranges from 5 to 20; and in which a ratio of the compound wherein R1 is a double bond-containing unsaturated hydrocarbon group is equal to or greater than 45% by mass with respect to a total amount of the component (a), and a ratio of the compound wherein R1 is an unsaturated hydrocarbon group having two or more double bonds is equal to or greater than 4% by mass with respect to a total amount of the compounds of formula (1) wherein R1 is an unsaturated hydrocarbon group; and component (b): an anionic surfactant. R1CO(EO)mOR2??(1) wherein R1 is a saturated or unsaturated hydrocarbon group having 15 to 17 carbon atoms; EO is an oxyethylene group; m is a positive integer; and R2 is an alkyl group having 1 to 3 carbon atoms.

Abstract: A liquid detergent of the present invention contains: component (a): a nonionic surfactant which contains compounds represented by the following formula (1) wherein an average value of m in formula (1) ranges from 5 to 20; and in which a ratio of the compound wherein R1 is a double bond-containing unsaturated hydrocarbon group is equal to or greater than 45% by mass with respect to a total amount of the component (a), and a ratio of the compound wherein R1 is an unsaturated hydrocarbon group having two or more double bonds is equal to or greater than 4% by mass with respect to a total amount of the compounds of formula (1) wherein R1 is an unsaturated hydrocarbon group; and component (b): an anionic surfactant. R1CO(EO)mOR2??(1) wherein R1 is a saturated or unsaturated hydrocarbon group having 15 to 17 carbon atoms; EO is an oxyethylene group; m is a positive integer; and R2 is an alkyl group having 1 to 3 carbon atoms.

Abstract: A liquid detergent including: 3% by mass or more of an ?-sulfo fatty acid alkyl ester salt (a) represented by the general formula (I); 5% by mass or more of at least one type of surfactant (b) selected from sulfonic acid-type anionic surfactants, sulfuric acid ester-type anionic surfactants, and nonionic surfactants other than component (a); and a water-soluble magnesium salt (c), where the total content of component (a) and component (b) is from 8 to 35% by mass, the content of component (a) is 50% by mass or less with respect to the total mass of the surfactant, and a mass ratio represented by the formula: [ component ? ? ( c ) ] [ component ? ? ( a ) ] is from 0.1 to 1.5. R1—CH(SO3M)-COOR2 ??(I) where R1 is a hydrocarbon group having 14 to 16 carbon atoms, R2 is a hydrocarbon group having 1 to 6 carbon atoms, and M is a counter ion.

Abstract: This liquid detergent contains an ?-sulfofatty acid ester salt (component (a)), an alkylbenzene sulfonate (component (b)), a polyoxyethylene alkyl ether sulfate (component (c)), and an alkanolamine (component (d)). The amount of the component (a) is 5% by mass or greater; the total amount of the component (b) and the component (c) is 5% by mass or greater; the total amount of the component (a), the component (b), and the component (c) is 10% by mass to 50% by mass, the mass ratio represented by (d)/(a) is 1/5 or greater, and the mass ratio represented by (a)/((b)+(c)) is 1 or less.

Abstract: A surfactant solution of the present invention includes a component (a): an ?-sulfonated fatty acid ester salt; a component (b): an alkanolamine; a component (c): an aromatic sulfonic acid; and a component (d): water, wherein the content of the component (a) is within a range from 30 to 45 mass %, the molar ratio represented by (b)/(a) is within a range from 0.05 to 0.5, and the molar ratio represented by (b)/(c) is within a range from 0.5 to 2.

Abstract: A surfactant solution of the present invention includes a component (a): an ?-sulfonated fatty acid ester salt; a component (b): an alkanolamine; a component (c): an aromatic sulfonic acid; and a component (d): water, wherein the content of the component (a) is within a range from 30 to 45 mass %, the molar ratio represented by (b)/(a) is within a range from 0.05 to 0.5, and the molar ratio represented by (b)/(c) is within a range from 0.5 to 2.

Abstract: This liquid detergent contains an ?-sulfofatty acid ester salt (component (a)), an alkylbenzene sulfonate (component (b)), a polyoxyethylene alkyl ether sulfate (component (c)), and an alkanolamine (component (d)). The amount of the component (a) is 5% by mass or greater; the total amount of the component (b) and the component (c) is 5% by mass or greater; the total amount of the component (a), the component (b), and the component (c) is 10% by mass to 50% by mass, the mass ratio represented by (d)/(a) is 1/5 or greater, and the mass ratio represented by (a)/((b)+(c)) is 1 or less.