RE: kitchen recipe for palladium

From: Eric Neilsen ^lt;[email protected]>
Date: 05/09/05-05:20:04 PM Z
Message-id: <200505092319.j49NJwjg014874@spamf2.usask.ca>

Well I am sorry you don't think in terms of chemical equivalents, that to
me, is where you start to understand what is going on. One shouldn't start
with grams unless there is a clear understanding as to what it means.

Proportions to me, means ratios, not exact weight. The ratio of 1 mole to
two moles reduced to 5 grams and 3.5 grams for the specific chemicals in
question. The other ratio mentioned or alluded to, was to water and that is
concentration or molar solution; that is up for discussion as to what is the
"best" or optimum concentration.

While this started as a "kitchen" discussion the subsequent post show that
this is why some aspects of photochemistry, is not like cooking. At least
not until one is really able to understand the why and how.

Well, then Clay "well, yeah", why didn't you post the "proportions"? I
didn't have them at my finger tips either. : ) But I could provide insight
for those wishing to follow along.

Cheers, EJ Neilsen
  

Eric Neilsen Photography
4101 Commerce Street
Suite 9
Dallas, TX 75226
http://e.neilsen.home.att.net
http://ericneilsenphotography.com
 
> -----Original Message-----
> From: Clay [mailto:wcharmon@wt.net]
> Sent: Monday, May 09, 2005 4:44 PM
> To: alt-photo-process-l@sask.usask.ca
> Subject: Re: kitchen recipe for palladium
>
> Well, yeah. That was my thought when I first mentioned to Chris that
> different salts would require slightly different (weight)proportions.
>
> So far I have been unable to locate a scale that measures in moles
> instead of grams :^)
>
> But I am still looking!
> Clay
> On May 9, 2005, at 10:24 AM, Kerik wrote:
>
> > Eric,
> >
> > Why not just cut to the chase and give simple weight-based formulas
> > for each salt/palladium combo with a description of the image
> > colors produced? No need to make this so cryptic!
> >
> > Kerik
> >
> >
> >> Eric, when you're saying "1 part ... with 2 parts ..." are you
> >> referring
> >> to simple weight or gram-molecular weight (mol)?
> >>
> >> TIA,
> >> Loris.
> >>
> >>
> >>> -----Original Message-----
> >>> From: Eric Neilsen [mailto:e.neilsen@worldnet.att.net]
> >>> Sent: Monday, May 09, 2005 5:02 PM
> >>> To: alt-photo-process-l@sask.usask.ca
> >>> Subject: RE: kitchen recipe for palladium
> >>>
> >>> ...
> >>> The ratio or proportion is 1 part PdCl2 with 2 parts XCl
> >>> where X is Na, Nh4,
> >>> or Li. This gives you X2PdCl4; your coating solution of
> >>> palladium.
> >>> ...
> >
Received on Mon May 9 19:33:09 2005

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