From: Katharine Thayer (kthayer@pacifier.com)
Date: 07/05/03-01:40:10 AM Z
Judy Seigel wrote:
>
> On Fri, 4 Jul 2003, Katharine Thayer wrote:
> > ... The fact that ammonium dichromate
> > can be mixed stronger than potassium dichromate IS a property of the
> > chemical; the fact that ammonium dichromate at saturation prints faster
> > than potassium dichromate at saturation, IS a property of the chemical.
> >
> etc. etc.
>
> Since the premise of both Sandy's and my remarks was that saturated
> solution strengths vary among the 3 dichromates, this was understood. The
> point being made was that discussion of properties (speed or whatever)
> must be pegged to solution strength. To declare that properties are
> different at different strengths therefore not only belabors the obvious,
> it risks confusing rather than clarifying the point.
>
But the idea that properties are different at different strengths was
not at all my point of course; my point was that the dichromates are
different chemicals, not just different dilutions of the same chemical,
and to say that the differences are purely a matter of dilution doesn't
make sense either in terms of chemistry or in terms of how they behave
in gum printing practice. I think I explained my argument clearly in
previous posts and won't repeat it here, but my point still stands.
kt
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