Comparative Study of Corrosion Inhibition Efficiency of Naturally Occurring Ecofriendly Varieties of Holy Basil (Tulsi) for Tin in HNO₃ Solution

Nutan Kumpawat, Alok Chaturvedi, Rajesh Kumar Upadhyay

Synthetic and Surface Science Laboratory, Department of Chemistry.

DOI: 10.4236/ojmetal.2012.23010                

Abstract

Weight loss technique has been used to study the corrosion inhibition efficiency of tin in HNO₃ solution by using the leaves and stem extract of different varieties of Holy Basil viz. ocimum basilicum (E_B),, ocimum cannum (E_C) and ocimum sanctum (E_S). The results show that all the varieties under study are good corrosion inhibitors, among which leaves extract of E_B is the most effective. Corrosion inhibition efficiency increases with increasing concentration of inhibitor and it also increases with increasing concentration of HNO₃ solution. Inhibition efficiency was found maximum up to 96.19% for tin in with 0.6% leaves extract.

Keywords

Acid Solution; Inhibitors; Tin Metal, Weight Loss; Surface Coverage

Conflicts of Interest

The authors declare no conflicts of interest.

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