The document discusses parameters that influence the dyeing process of reactive dyes on cellulose fibers. It summarizes that the substantivity of reactive dyes increases with higher standard affinity, electrolyte concentration, lower pH and dye concentration, lower temperature, and lower liquor ratio in the dye bath. The speed of dye diffusion can be increased by higher temperature, smaller dye molecules, lower substantivity, and causticized or mercerized cellulose. The speed of the dye-fiber reaction depends on reactivity of the reactive group, inductive effects of the chromophore and substituents, pH, temperature, and substantivity. Bi-reactive dyes provide a more stable bond to acid and alkali compared to mono-