Synthesis and anticorrosive effect of epoxy‐allylmenthols on steel in molar hydrochloric acid

Abstract

Purpose

This paper seeks to evaluate the effect of natural menthols and their synthesised epoxy‐allylmenthols as a non‐toxic inhibitor on the corrosion of steel in HCl media at various temperatures.

Design/methodology/approach

Epoxy‐allylmenthols were synthesised and characterised. Gravimetric technique was used to measure the efficiency of corrosion inhibition.

Findings

Modified allylmenthol (to epoxy‐allylmenthol) exhibited a good inhibition. But its efficiency decreases with temperature.

Research limitations/implications

The inhibition efficiency increases with the concentration of inhibitor to attain 74 percent at 0.8 g/l.

Practical implications

The efficiency of menthol derivatives increases with the concentration but decreases with rise of temperature in the 303‐328 K range. Natural inhibitor can be used in chemical cleaning and pickling processes.

Originality/value

The originality of this work is to find a safe and cheap eco‐friendly inhibitor from natural plants.

Citation

Faska, Z., Majidi, L., Fihi, R., Bouyanzer, A. and Hammouti, B. (2007), "Synthesis and anticorrosive effect of epoxy‐allylmenthols on steel in molar hydrochloric acid", Pigment & Resin Technology, Vol. 36 No. 5, pp. 293-298. https://doi.org/10.1108/03699420710820405