Methyl Red - 17-10-2025 at 21:57
I followed https://sci-hub.se/https://doi.org/10.1002/9780470132630.ch3... on a eighth of its scale:
in a 500ml beaker with an ice bath, I added 225mls of water and 2.5g of potassium persulfate. I then mixed 20ml water, 1ml Pyridine, and 1ml of .4M
AgNO3 in a small beaker, and slowly pipetted that solution into the big solution. it has been around half an hour and it is cloudy and white, and I
will report when other results are obtained.
DraconicAcid - 18-10-2025 at 08:18
Nice. I've been meaning to try that for a decade or so.
Methyl Red - 18-10-2025 at 10:42
Update: The morning sun has killed it 
all that's left is a slightly gray solution,
and it's not even worth recovering the 25 cents of silver in it.
the paper said the solution was to turn yellow, then orange, so I really should have suspected something was up when it stayed white.
chempyre235 - 18-10-2025 at 18:40
That's too bad. At least you started with only 25 cents' worth. Maybe you could try it with the beaker away from any windows, and/or in an amber
beaker or bottle.
I have this on the list for things to try, as well. Seems like a fairly simple synthesis, with potential uses for organic reactions.
[Edited on 10/19/2025 by chempyre235]
Methyl Red - 15-1-2026 at 12:42
I made some successfully: https://youtu.be/5u2qNvEgrcY
DraconicAcid - 15-1-2026 at 13:46
I'm still meaning to try that. Also the bipy analogue, and was going to try the picolinate (which may or not be stable).