Re: Gum "tanning" process (was: Gum Green)

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alnovo@inwind.it
Date: 05/22/01-11:36:44 PM Z


> In case anyone is still confused, chromate is CrO4-, dichromate Cr2O7=
> (both Chromium (VI)) and the species that does what we want to the
> colloid is Cr3+ (Chromium (III)).

It was surely a typing mistake: chromate is CrO4=

Alberto


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