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>Date: Thu, 25 Sep 1997 07:50:09 -0400
>To: Aquatic-Plants at actwin_com
>From: John Anthony <anthony at pop_uky.edu>
>Subject: Re: Aquatic Plants Digest V2 #975
>>Date: Wed, 24 Sep 1997 23:52:22 -0700 (PDT)
>>From: "A. Inniss" <andrewi at u_washington.edu>
>>Subject: Re: Ick remedies/malachite and copper
>> Well, I'm sure our resident chemists will give a more complete
>>explanation here, but to say malachite doesn't contain copper is akin to
>>saying bauxite doesn't contain aluminum ;-)!
> Well, the malachite green I've always worked with has the formula
>C23H25N2/2HC2O4 (the oxalate salt). No copper there. The parent form >is a bis(dimethylamino)phenyl carbinol. So unless the malachite green >you are using is some sort of copper salt (which would be odd, since the
>chromophore is cationic, as is copper ion), it does not contain any copper.
> I could pop the structure onto my website, if anyone is interested.
>Department of Chemistry, University of Kentucky
>anthony at pop_uky.edu