Abstract: A kinetic study of the elimination of hydrogen bromide from α,β-dibromo-propanamide reactive dyes was made. Through ¹H nuclear magnetic resonance tracing technique this elimination reaction was found to be a pseudofirst order reaction. The reaction rate constants in deuterium oxide at pH 7-9 and temperature 25-50℃ were determined.

Key words: ¹H-NMR Spectrometry, Elimination reaction, α,β-Dibromopropa-namide dyes, α-Bromoacrylamide dyes, Reaction kinetics, Nuclear magnetic resonance tracing technique, Pseudofirst order reaction, Apparent rate constant