Dileep KumarKian-Eang NeoMalik Abdul Rub2025-01-022025-01-022016-03-1610.3139/113.110422https://dspace-cris.utar.edu.my/handle/123456789/9726The present work concerns with the effect of alkanediyl-α,ω-bis(dimethylcetylammonium bromide) gemini surfactants on the reaction rate of ninhydrin with glycyl-glycine. The spectra showed peaks at 400 nm and 570 nm in aqueous and aqueous–micellar media indicating the formation of the same product. Under pseudo-first-order conditions of excess ninhydrin, the reaction followed an irreversible first- and fractional-order kinetics with respect to [Gly-Gly] and [ninhydrin]. Also, the rate constants (<i>k</i>_ψ) increases and leveling-off regions are found with [geminis] (akin to conventional cetyltrimethylammonium bromide, CTAB), a third-region of increasing <i>k</i>_ψ is observed at higher [geminis]. The kinetic data in gemini micellar medium have been examined with the pseudo-phase model.journal-article