Everclear OK for dissolving Phenidone?

WarEaglemtn · Nov 22, 2004

I find the use of Everclear something a lot use in wet plate/ambrotype processing. Is it OK to use for dissolving phenidone as well? A bit safer around the house than some other alcohols as this one can be imbibed for 'medicinal' purposes, if nothing else... maybe I can write it off on taxes as a medicine???

titrisol · Nov 22, 2004

It should be fine only if you don't plan to keep your phenidone for a long time

Everclear is Ethanol at a medium concentration and it has a lot of water into it.

john_s · Nov 22, 2004

I recently acquired some dimezone-s (phenidone variant) to make some pyrocat-hd and it dissolved fairly quickly in water after the previous 2 ingredients (metabisulphite and pyrocatechol). It can be hard to get, but might become easier as more people want it. You need to use a bit more (+27%) because of its higher molecular weight (206 as against 162 for phenidone). It is supposed to make a longer lasting solution, if that is important or useful for you.

Tom Hoskinson · Nov 22, 2004

john_s said:
I recently acquired some dimezone-s (phenidone variant) to make some pyrocat-hd and it dissolved fairly quickly in water after the previous 2 ingredients (metabisulphite and pyrocatechol). It can be hard to get, but might become easier as more people want it. You need to use a bit more (+27%) because of its higher molecular weight (206 as against 162 for phenidone). It is supposed to make a longer lasting solution, if that is important or useful for you.

Both Phenidone and Dimezone-s dissolve nicely in Propylene Glycol (and the pyrocatechol and metabisulfite as well). The Propylene Glycol stock solutions made with either type of Phenidone last for a very, very long time.

john_s · Nov 22, 2004

Tom Hoskinson said:
Both Phenidone and Dimezone-s dissolve nicely in Propylene Glycol (and the pyrocatechol and metabisulfite as well). The Propylene Glycol stock solutions made with either type of Phenidone last for a very, very long time.

Tom, have you made up Pyrocat-HD solution_A with propylene glycol instead of water? Sounds like a good idea, especially for me because i prefer to mix chemicals very infrequently. Do you have to heat it above room temp? I admit to some (possibly unfounded) prejudice towards cooking developing agents.

Tom Hoskinson · Nov 23, 2004

john_s said:
Tom, have you made up Pyrocat-HD solution_A with propylene glycol instead of water? Sounds like a good idea, especially for me because i prefer to mix chemicals very infrequently. Do you have to heat it above room temp? I admit to some (possibly unfounded) prejudice towards cooking developing agents.

Pyrocat-HD mixed in propylene glycol is my standard developer and has been since 2003. I'm just getting ready to mix up another liter of the "A" solution.

All of the A solution components dissolve in propylene glycol between 140F and 160F. All the components in this developer can tolerate considerably higher temperatures than 160F with no degradation.

Everclear OK for dissolving Phenidone?

WarEaglemtn

titrisol

john_s

Tom Hoskinson

john_s

Tom Hoskinson

Privacy & Transparency

Privacy & Transparency