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So nickel is a metal which can produce allergies in some
people, people get allergic to nickel. And it’s a metal which is
found in Canada and Sir Ludwig Mond founder of the
company that later becomes ICI discovered a process for
extracting nickel from the ore using carbon monoxide and
started a huge factory on the south coast of Wales. And the
so-called nickel carbonyl was really quite an important
industrial compound even though it was fantastically toxic.
And it’s unusual as a metal compound because it boils at
room temperature and usually one thinks of metal
compounds as salts. Nickel is now used quite a lot in the
plating industry for plating materials, iron and steel in
particular, and then often you would put chromium or
something on top. Used to be used for plating the inside of
tins for peas and things like that. And sometimes the sulphur
from inside the peas would be released by bacteria and would
react to find strange black spots across the insides of the tin.