• C. Chinnakani
• I. Malarvizhi

Extract of different concentration of Eugenia Singampattiana Beddome leaves has shown potentially good inhibition performance on API – 5L – Grade – X52 line pipe Steel in Crude oil with 75 %, connate water environment. The potential and/or inhibition efficiency increased with the increase of inhibitor concentration dosage and reaches the maximum of 96.97% inhibition efficiency. The multilayer adsorption (MLA) on the metal surface may follows physisorption mechanism. Calculated values of activation energy (Ea), enthalpy of adsorption (ΔHads) and free energy changes (ΔGads) are very clearly reveals that the adsorption of naturally synthesized chemical compounds which are biodegradable derived from simple procedure of Eugenia Singampattiana Beddome leaves extract on line pipe surface follows Physisorption, endothermic and spontaneous process respectively. The inhibitor may found to obey Langmuir adsorption isotherms in different aggressive connate water environments

API – 5L – Grade – X52 Steel, 75% connate water, Average Mass Loss, Adsorption isotherm

" Viability of Eugenia Singampattiana Beddome leaves as potential Green inhibitor on ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.383-395, April-2019, Available :http://www.jetir.org/papers/JETIR1904055.pdf

" Viability of Eugenia Singampattiana Beddome leaves as potential Green inhibitor on ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp383-395, April-2019, Available at : http://www.jetir.org/papers/JETIR1904055.pdf