Tim
Patrick Gainer was an advocate of diluting phenidone in alcohol or
propylene-glycol for his one-shot developers. (2004- PhotoTechniques Magazine
article attached)
The type of alcohol could influence the life of your solution (hygroscopic or
not), but not the solubility.
I used PG when I tested these developers and the Phenidone solution was good
3yrs later
The small amounts of alcohol shouldn;t change the developer action; I think
HC-110 used prop-glycol anyway
Hope this helpsPABLO
On Sunday, October 24, 2021, 04:09:42 PM EDT, Tim Daneliuk
<dmarc-noreply@xxxxxxxxxxxxx> wrote:
I make Pyrocat-HD Part A in 500ml batches. This calls for 1g of Phenidone.
However, Phenidone is notoriously hard to get into water solution even
if the water is heated to, say, 120F, and I use continuous magnetic
stirring on my lab hotplate.
It's been suggested that I could mix the Phenidone into 10cc (ml) of
alcohol - 99% isopropyl, ethanol, and even denatured have been suggested.
Two questions:
- Will doing this - and thereby displacing 10ml of the 500ml solution with
alcohol make any appreciable difference in how the developer works?
- Does the type of alcohol matter?
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Tim Daneliuk tundra@xxxxxxxxxxxxxx
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