Role of traces of cupric copper on nitrate induced corrosion.

Eipeson, W. E. and Sastry, L. V. L. (1984) Role of traces of cupric copper on nitrate induced corrosion. Journal of Food Science and Technology, 21 (3). pp. 164-166.

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Abstract

Corrosion trials on tinplate strips were conducted using media containing 2% ivy gourd alcohol-insoluble solids (AIS) + 100 p.p.m. nitrate in succinate/malate/citrate buffer at pH 4.0, 4.5, 5.0 and 5.5. AIS enhanced corrosion activity of nitrate, by a factor of 4 at pH 4.0-4.5, by a factor of 2 at pH 5.0-5.5. This effect was mainly due to protein present in AIS; effects of the pectin and crude fibre fractions were negligible. Studies on effects of Cu-2-+ (at concn. O10 p.p.m.) on corrosion by 100 p.p.m. nitrate at pH 4.5 or 5.0 showed Cu-2-+ to enhance the corrosive action of nitrate. In the absence of nitrate, Cu-2-+ exerted negligible corrosion activity. Possible mechanisms of the synergistic effects of Cu-2-+ and nitrate are briefly considered. [See preceding abstr. for part I.]

Item Type:	Article
Uncontrolled Keywords:	TIN-; ivy gourd fractions, tinplate corrosion by; CORROSION-; VEGETABLES-SPECIFIC; NITRATES-; ivy gourd fractions, tinplate nitrates corrosion enhancement by; COPPER-; tinplate nitrates corrosion enhancement by Cu ions
Subjects:	600 Technology > 05 Chemical engineering > 07 Metal Corrosion 600 Technology > 08 Food technology > 23 Vegetables
Divisions:	Fruit and Vegetable Technology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	21 Jun 2016 11:04
Last Modified:	21 Jun 2016 11:04
URI:	http://ir.cftri.res.in/id/eprint/6611

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