From: Scott Walker (walker@sympatico.ca)
Date: 07/25/03-10:11:55 AM Z
It was an unfair question - I have read almost every reference to
Orthochrome T. Many references to the formula are wong...
1-ethyl-2-[(1-ethyl-6-methyl-4(1H)-quinolinylidene)methyl]-6-methy l-,iodide
Scott.
-----Original Message-----
From: Ryuji Suzuki [mailto:rs@silvergrain.org]
Sent: Friday, July 25, 2003 2:41 AM
To: alt-photo-process-l@sask.usask.ca; martinm@SoftHome.net
Subject: Re: Bromo-iodide Silver Gelatin Emulsion as an Alternative
process
From: martinm <martinm@SoftHome.net>
Subject: Re: Bromo-iodide Silver Gelatin Emulsion as an Alternative process
Date: Fri, 25 Jul 2003 08:07:52 +0200
> Orthochrome T is 1,1'-diethyl-6.6'-dimethylisocyanine.
Nice job!
> A more advanced solution would be choosing pinacyanol chloride (red) and
> 1,1 -diethyl -2,2 cyanine iodide (green). Have a look at
> http://cabd0.tripod.com/holograms/id3.html
> Since those two dyes cannot be used at the same time, this would imply the
> making of two different silver halide solutions, one for each dye.Prior to
> coating they would be mixed together...
I can't look it up now, but I remember Baker's book described a that
dye (along with Orthochrome T) with suggested doses in terms of a per
cent fraction of AgBr (was it something like 0.05%?). (definitely not
meant to be a recipe.)
-- Ryuji Suzuki "Reality has always had too many heads." (Bob Dylan, Cold Irons Bound, 1997)
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