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Re: Malachite green

	Malachite contains copper.

	Malachite green does not.  There are several malachite greens,
they are dyes, and quoting an organic chemistry textbook:
	"Dyes of this group are derivatives of bis(p-aminophenyl)-
phenylmethane."  Basic green 4 (Malachite Green 514) is
bis(p-dimethylaminophenyl)phenylmethane.  I'm not going to try
ASCII art for the structure of that, but it contains _no_ copper.
I don't know who thought up the name "malachite green", but it has
caused lots of confusion.

	Source:  Noller, Chemistry of Organic Compounds.

Paul Sears        Ottawa, Canada