The dispersability of a monoazo disperse dye in the presence of four dispersing agents, wetting agent, dextrin, and urea was investigated. Three methods were used to determine the stability of prepared dispersions. The results showed that the stability of prepared dispersions is related to the behavior of dye dispersability in a manner that when the dispersability improves the stability increases. In all used methods, the results indicated that Irgasol DAM and Asutol 644 are more stable than the other dispersing agents. Moreover, Irgasol DAM is partially more stable than Asutol 644. The used auxiliaries such as wetting agents and dextrin caused more stability of prepared dispersions but urea, as an auxiliary, had the lowest effect on the stability of dispersions. The obtained results from all four methods confirmed each other perfectly。