Abstract: A compound is provided that exhibits high detergency even when contained at a low concentration in a detergent composition, and that has a narrow gelation concentration range at low temperatures and excellent handling properties; a precursor compound for producing the compound; and a surfactant composition and a detergent composition that include the compound. The compound of the present invention is represented by a chemical formula (1) below: wherein R1 and R2 are each an aliphatic hydrocarbon group, X is a single bond or a hydrocarbon group having 1 or more and 5 or less carbon atoms, a total number of carbon atoms of R1, R2, and X is 2 or more and 39 or less, A1 is —O(-A11O)m—H or —O(-A12O)p—H, A2 is —O—R3O(-A21O)n—H or —O(-A22O)q+1—H, wherein R3, A11, A12, A21, A22, m, n, p, q are defined in the specification.

Abstract: The invention provides a compound of chemical formula (1), a precursor compound for producing the compound, a surfactant composition and a detergent composition including the compound, wherein R1 and R2 are each an aliphatic hydrocarbon group, X is a single bond or a hydrocarbon group having 1 or more and 5 or less carbon atoms, a total number of carbon atoms of R1, R2, and X is 2 or more and 39 or less, A1 is —O(-A11O)l-H, A2 is —O—CH2—CH(—O(-A21O)m-H)(—CH2—O(-A22O)n-H) or —O—CH(—CH2—O(-A23O)s-H)(—CH2—O(-A24O)t-H), A11, A21, A22, A23, and A24 are each independently an alkanediyl group having 2 or more and 8 or less carbon atoms, l, m, n, s, and t are an average value and are each independently 0 or more, and a total of l, m, and n, and a total of l, s, and t are each independently more than 0 and 200 or less.

Abstract: The present invention is a softening base agent containing a compound represented by the following formula 1: wherein each of R1 and R2 represents a hydrocarbon group with 6 or more and 24 or less carbons, and the total number of carbons in R1 and R2 is 18 or more and 30 or less; and M is a cation, excluding a hydrogen ion.