STUDY OF CORROSION RESISTANCE OF ELECTROLYTIC TINPLATE FOR CANNING
The aim of this research work was to study the corrosion resistance of tinplate for canning in the liquid medium of tomato juice, tomato juice with a corrosion inhibitor (methionine), and in model liquid mediums simulating tomato products. Model liquid mediums contained 0,25 to 2,0 % of citric acid and 1,0 % of sodium chloride. The corrosion rate of steel was measured by linear polarization resistance using universal automatic corrosionmetr «Jekspert-004». In result of the conducted researches it was established that the introduction of methionine in the amount of 0,1-0,5 % in the tomato products reduces the corrosion rate of tinplate 1,3 - 1,4 times. It is established that the model liquid medium containing 1.0 % of citric acid and 1.0 % of sodium chloride, the closest to the corrosiveness of the tomato products.