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Elements and Compounds
Metal and Alloys

Is zinc corrosive?


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July 12, 2009 8:02PM

Corrosive to what? What do you mean by corrosive?

If you mean: "Can it be corroded", the answer is Yes. That is the sole reason for steel piping to be galvanised, that is: covered by a layer of zinc. Zinc is more electropositive than iron/steel, so would immediately react with any iron oxide that forms to regenerate the iron and itself become zinc oxide. For this reason zinc (unlike tin) is called a sacrificial, rather than protective, coating. You should be more specific as the first person who answered your question, said.