Corrosion of Foodstuffs Cans in Saline Solutions Containing Preservative Material


  • Rana A. Majed University of Technology
  • Slafa Ismael Ibrahim University of Technology
  • Zahra`a S. Al-Saffar University of Technology


Food cans, corrosion of cans, sodium benzoate.


This work involves try to study the corrosion behavior of food can in 200 ppm sodium benzoate which use as preservative material in the absence and presence of three concentrations of sodium chloride (0.001, 0.01, and 0.1 M) to study corrosion resistance of can to pitting due to penetrate chloride ions the passivity layer. This study was performed using potentiostat at scan rate 3 mV.sec-1. Corrosion parameters were measured using Tafel extrapolation method, in addition to calculate corrosion resistance and corrosion rate. The data of corrosion indicate that using sodium benzoate as preservative material give acceptable corrosion resistance of foodstuffs can. The presence of 0.001 and 0.01M NaCl don`t affect on the corrosion behavior of cans, while 0.1M of NaCl in 200 ppm sodium benzoate solution lead to increases of corrosion current density. The increases in corrosion current density may be due to penetrate chloride ions the protective film and the competitive role for chloride and benzoate ions to bonding with metal surface. Also the results of polarization resistance indicate that the resistance decreases only in the presence of 0.1M saline solution with 200 ppm sodium benzoate. Therefore, must avoid the high salinity in the food cans to avoid corrosion of cans and release the toxic metallic ions the foods and drinks.


Author Biography

Rana A. Majed, University of Technology

Assistant Prof. in Materials Eng. Department


Caniel, “Packaging soft drinks and reconstituted juices in beverage cansâ€, 2002.

Cosmetic Ingredient Review Expert Panel Bindu Nair, “Final Report on the Safety Assessment of Benzyl Alcohol, Benzoic Acid, and Sodium Benzoateâ€. Int J Tox 20 (Suppl 3): 2001, p.23–50.

A. Gryscavage, P.E. BetzDearborn, “Controlling costly corrosion in continuous food processing equipmentâ€, 1997, Betz Dearborn Water Management Group.

Composition for inhibition of corrosion in galvanized steel cans, Patent 5462727 Issued on October 31, 1995.

Antonela NinÄević Grassino, Zorana Grabarić, Aldo Pezzani, Giuseppe Squitieri, Katarina Berković, “Corrosion inhibition with different protective layers in tinplate cans for food preservationâ€, Journal of the Science of Food and Agriculture, vol. 90, Issue 14, pp. 2419–2426, 2010.

Rana A. M., “Corrosion inhibition of Al-Si-Cu alloy in the basic media by using six inhibitors at four temperaturesâ€, Um-Salama Science Journal, vol.5, no.3, pp. 427-439, 2008.

Rosenfeld I. L. and Danilov I. S., Corrosion Sci., vol.7, pp.129, 1967.

K. B. Oldham and F. Mansfeld, Corrosion Sci., vol.14, pp.813, 1973.

Scheib-Ratzar, J.H., Teller. G.H., Corrosion Sci., vol.13, pp.11, 1973.

M. Periassamy and P. R. Karishnaswamy, J. Electronal Chem., vol.61, pp.349, 1975.

J. Janko Wisk and R. Juchniewicz, Corrosion Sci., vol.20, pp.841, 1980.

I. Qamor and S. W. Hausion, British Corrosion J., vol.25, pp.202, 1990.

Stern, M., Method for Determining Corrosion Rates from Linear Polarization Data, Corrosion, vol.14, no.9, pp.440-444, 1958.

Stern M., and Geary, A. L., “Electrochemical Polarization I: A Theoretical Analysis of the Slope of Polarization Curvesâ€, Journal of the Electrochemical Society,vol.104, no.1, pp.559-563, 1957.

Lawrence J., Korb and David L. Olson, “Corrosionâ€, Volume 13 of the 9th Edition, “Metals Handbookâ€, fourth printing (1992).




How to Cite

Majed, R. A., Ibrahim, S. I., & Al-Saffar, Z. S. (2013). Corrosion of Foodstuffs Cans in Saline Solutions Containing Preservative Material. Asian Journal of Agriculture and Food Sciences, 1(5). Retrieved from