Abstract: A liquid detergent composition comprising:(a) disalt of an alpha-sulfonated fatty acid having the general formula (I): ##STR1## wherein R.sub.1 is an alkyl or alkenyl group having 8 to 16 carbon atoms and M and M' are independently a cation capable of forming a water-soluble salt selected from the group consisting of substituted and unsubstituted ammonium groups; and(b) an poly(oxyethylene) alkyl ether sulfate having the general formula (II):R.sub.2 --O--CH.sub.2 CH.sub.2 O).sub.n SO.sub.3 M" (II)wherein R.sub.2 is an alkyl group having 9 to 15 carbon atoms, n is a number of 0.5 to 7, and M" is a cation selected from the group consisting of alkali metals, alkaline earth metals, substituted and unsubstituted ammonium groups, and the weight ratio of the component (a) to the component (b) being within the range of from 1/5 to 1/2.This liquid detergent composition does not cause the formation of film of the salt of an poly(oxyethylene) alkyl ether sulfuric acid and has good detergency characteristics.

Abstract: The invention provides a novel detergent composition free from the problem of waterspots left on the surface of a glassware washed therewith followed by rinse in addition to the excellent detergency and foaming power. The composition comprises, as the essential components thereof, from 15 to 50 parts by weight of a neutral salt of an .alpha.-sulfonated fatty acid having 14 to 18 carbon atoms in a molecule, the countercations being magnesium or a substituted or unsubstituted ammonium ion, such as those derived from mono-, di- and triethanolamines, and from 85 to 50 parts by weight of a diethanolamide of a fatty acid having about 12 carbon atoms in a molecule, such as lauric acid or coconut oil fatty acid. The performance of the inventive detergent composition can further be improved by replacing up to 80% by weight of the above neutral salt with a salt of an alkyl, e.g. methyl, ester of an .alpha.