[pure-silver] Re: Chromogenic toning?
- From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
- To: "'pure-silver@xxxxxxxxxxxxx'" <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 21 Jan 2005 09:21:04 -0500
p-Diethylaminoaniline sulphate is one of the older color developing agents. You
can substitute one of the newer ones say Kodak CD-3 or CD-4 which you can get
from most of the photo suppliers like ArtCraft.
Sodium formaldehyde sulphoxylate is what you get when you add paraformaldehyde
to sodium sulfite. You can make it in situ or it may be available from a
supplier who makes lithograph developers.
4-Nitrobenzyl cyanide, acetoacet-2 5-dichloroanilide, 2,4-dicloro-1-naphthol,
1-naphthol are all color couplers. Each produces a different color, for
example, 1-naphthol produces a cyan color. You would use only one or maybe two
from the list to produce the color you want in the print. You may have to go to
a chemical supplier like JT Baker to get these.
Jerry
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-bounce@xxxxxxxxxxxxx]
On Behalf Of Nick Zentena
Sent: Thursday, January 20, 2005 8:28 PM
To: 'pure-silver@xxxxxxxxxxxxx'
Subject: [pure-silver] Chromogenic toning?
Hi,
I've been reading "The Photographer's Toning book" and would like to try
chromogenic toning. But neither
p-Diethylaminoaniline sulphate
Sodium formaldehyde sulphoxylate
Are on the chemical list of my usual supplier. Can I sub something for these
two?
Looking at the rest of the formula it gets worse.
4-Nitrobenzyl cyanide
Acetoacet-2 5-dichloroanilide
2,4-dicloro-1-naphthol
1-naphthol
Should I give up or are these things easily available?
Thanks
Nick
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