NotANumber
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Pinacryptol green (1,3-diamino-N-phenylphenazone chloride) home synthesis
Heyo~
Just throwing it out there for now so I have some motivation
Expect an update in a few days
As described in the title, my goal is to synthesize 1,3-diamino-N-phenylphenazone hydrochloride for use as a photographic desensitizer at home!
The route I'm going with is starting with aniline and chlorobenzene, via picryl chloride and 2-nitrodiphenylamine. As such, DO NOT follow this route
unless you really know what you're doing, cause you might lose your hands or life, picryl compounds are no joke. If you don't know what they
are, you do not know what you're doing 
The first update will be a rough draft of the route, on my fav thing to use for such tasks - paper
Love y'all!
mrrp!~
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bnull
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Isn't that a 5 in place of the N?
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NotANumber
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Honestly -- I'm not exactly sure, that's how it's written in a russian book from the 40s I'm following ":>
mrrp!~
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bnull
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I should have guessed. The only mentions of pinacryptol green (also called pynakryptol green in some places) that I could find in a quick search come
from photography forums and a CIA file on Soviet technologies. The CIA file cites a short article on desensitizers from the August 1939 issue of
Советское Фото (Soviet Photo or something like it), pages 28-29. Pretty hard to find some synthetical routes for the thing itself.
What is the name of the book?
Edit: Here's the article from Soviet Foto. I forgot the author's first name.
Attachment: Katzenelenbogen - Pinacryptol green and yellow (in Russian).pdf (1.1MB)
This file has been downloaded 42 times
[Edited on 7-12-2025 by bnull]
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NotANumber
Harmless
Posts: 14
Registered: 2-6-2024
Location: Poland
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Mood: so goddamn eepy
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It's called Практикум по синтетическим лекарственным и душистым веществам и
фотореактивам. It's a really good book all in all, the pinacryptol green synthesis is numbered 54, on the 110th page of the scan file,
I've attached the scanned copy below
Attachment: berkengeim.djvu (3MB)
This file has been downloaded 21 times
mrrp!~
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bnull
National Hazard
Posts: 959
Registered: 15-1-2024
Location: East Woods
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Mood: Happy New Year!
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Thank you.
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