Everclear OK for dissolving Phenidone?

[WarEaglemtn]

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]

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]

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]

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]

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]

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.