---

ABSTRACT The kinetics of ninhydrin- -amino acid (alanine, phenylalanine, and valine) reaction have been studies in the absence and in presence of a common hydrotrope, sodiumbezoate. A strong enhancement in the rate of reaction has been observed in the presence of the hydrotrope above its minimal hydrotrope concentration (MHC). The order of reaction in ninhydrin was always found to be unity while that in amino acid decreases from unity to zero at higher [Aminoacid]. A mechanism consistent with kinetic data and involving the formation of a mixed aggregation assemblies between amino acid and hydrtotrope has been proposed.

---

Dr. Ekta Pandey, M.Sc., PhD Chemistry is working as Assistant Professor in BIET, Jhansi in Chemistry Department.She has done her research work from HBTI, Kanpur.She has been teaching PG and UG students for past 10 years.She has national and international publications to her credit. Her area of interest include environment chemistry,Nano Technology

---