[pure-silver] Re: Phenidone in propylene glycol vs glycerin
- From: BILL WILLIAMS <krbill_10@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Fri, 19 Feb 2010 07:53:43 -0800 (PST)
Bob,
My understanding is that 'EVERCLEAR' grain alcohol is 95% ethanol. I believe
that Patrick Gainer was my source of information for mixing the phenidone in
the 90% alcohol, and I'm quite sure that he indicated that 'EVERCLEAR' is also
fine for mixing the phenidone in. I may even use it next time instead of the
propylene glycol. Or maybe I'll mix half in propylene glycol and half in
Everclear. The 90% alcohol I used was from the local CVS pharmacy and I
really don't see where I will be gaining anything over it by using propylene
glycol or Everclear though. The 90% has done very well. This is a link to the
Wikipedia info on Everclear: http://en.wikipedia.org/wiki/Everclear_(alcohol)
--- On Fri, 2/19/10, BOB KISS <bobkiss@xxxxxxxxxxxxx> wrote:
> From: BOB KISS <bobkiss@xxxxxxxxxxxxx>
> Subject: [pure-silver] Re: Phenidone in propylene glycol vs glycerin
> To: pure-silver@xxxxxxxxxxxxx
> Date: Friday, February 19, 2010, 8:22 AM
>
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> DEAR
> BILL,
>
>
> Excellent
> results with 90% isopropyl. Any chance 98% pure ethanol
> (ethyl alcohol) would
> work dissolving and storing phenidone? It is easier for
> me to get 98% ethanol
> than it is 90% isopropyl! Comes from living on a rum
> producing island!
>
>
> CHEERS!
>
>
> BOB
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> From:
> pure-silver-bounce@xxxxxxxxxxxxx
> [mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Claudio
> Bonavolta
>
> Sent:
> Thursday, February 18, 2010
> 4:03 PM
>
> To:
> pure-silver@xxxxxxxxxxxxx
>
> Subject:
> [pure-silver] Re:
> Phenidone in propylene glycol vs glycerin
>
>
>
>
>
>
> Thanks
> bill,
>
> That
> makes more than 3 years of shelf life in alcohol,
> that's pretty good !
>
> Claudio
> Bonavolta
>
> http://www.bonavolta.ch
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> ----- Message d'origine
> -----
>
>
>
>
> De:
> BILL WILLIAMS
> <krbill_10@xxxxxxxxx>
>
>
>
>
> Date:
> Thu, 18 Feb 2010
> 08:03:26 -0800 (PST)
>
>
>
>
> Sujet:
> [pure-silver]
> Re: Phenidone in propylene glycol vs glycerin
>
>
>
>
> À:
> pure-silver@xxxxxxxxxxxxx
>
>
>
> While I have no experience using
> phenidone in either
> propylene glycol or glycerin, I do have experience with
> phenidone mixed in
> 90% Ispropyl Alcohol. I mixed phenidone in the alcohol
> the first time back
> sometime around early 2004. I made a 25% solution to
> begin with, in a 250ml
> medicine bottle. From this 25% solution, I make a 10%
> solution in a 100ml
> medicine bottle. I mix formulas from the 10% bottle, and
> when it is used up,
> I make another 100ml 10% solution from the 25% solution
> bottle. It has only
> slightly changed color and continues to works fine. I use
> it in paper
> formulas but it does still work just as well in film
> formulas. I mixed a
> second 25% batch sometime around mid 2007. The new batch
> I use in film
> formulas and it looks fine and works fine. I now have
> some propylene glycol,
> and I plan on using it the next time I purchase
> phenidone. I don't have any
> expectations that it will serve me any better than has
> the alcohol. I would
> have
>
> already used up bo! th batches but I primarily use
> developers that don't use
> phenidone and only occasionally mix up one with
> phenidone. Mixing in the
> alcohol doesn't require heating the mixture.
>
>
>
> --- On Thu, 2/18/10, Claudio Bonavolta wrote:
>
>
>
> > From: Claudio Bonavolta
>
> > Subject: [pure-silver] Phenidone in propylene glycol
> vs glycerin
>
> > To: "Pure-Silver"
>
> > Date: Thursday, February 18, 2010, 9:32 AM
>
> >
>
> > Me again ...
>
> > Because the quantities of phenidone required in
>
> > developers are very low and difficult to measure,
> many
>
> > dissolve it in either alcohol, propylene glycol or
> glycerin
>
> > at a low concentration.
>
> > After googling, it looks like propylene glycol and
>
> > glycerin allow a better shelf life of the solution,
> maybe
>
> > with a slight advantage to glycerin but at the cost
> of being
>
> > less agreable to use due to its high viscosity.
>
> > Do some o! f you already tried both products ?
>
> > What is your preferrence and why ?
>
> >
>
> > Thanks in advance,
>
> > Claudio Bonavolta
>
> > http://www.bonavolta.ch
>
> >
>
>
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>
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