PROBLEM TO BE SOLVED: To provide dispersion liquid in which AuAg alloy particulates are dispersed at a high concentration.SOLUTION: There is provided a dispersion liquid of alloy particulates which contains gold (Au) and silver (Ag) as constituent elements, wherein the maximum absorption wavelength measured using an absorptiometer is 520 nm or less, the molar concentration in terms of constituent metal elements of the alloy particulates is 10 to 80 mM and the sediments containing the alloy particulates are not visually observed in a stationary state. In addition, there is provided an alloy particulate dispersion liquid in which the polydispersity index (PDI) of the alloy particulates is 0.6 or less based on a dynamic light scattering method. There is provided an alloy particulate dispersion liquid in which the maximum frequency grain size on a number basis of the alloy particulates is 10 to 20 nm.
