[alt-photo] Re: thiourea/thiourea dioxide

[C.Breukel at lumc.nl]

Dan,

Per recommendation of the firm I store mine FSA at 4deC in a fridge, seems to keep well for more than 10 years now..

Best,

Cor

> -----Original Message-----
> From: alt-photo-process-list-bounces at lists.altphotolist.org [mailto:alt-
> photo-process-list-bounces at lists.altphotolist.org] On Behalf Of Daniel
> Williams
> Sent: zondag 11 september 2011 0:47
> To: The alternative photographic processes mailing list
> Subject: [alt-photo] Re: thiourea/thiourea dioxide
> 
> Christina,
> 
> I bought Thiox (thiourea dioxide) at Pro Chemical & Dye
> http://www.prochemicalanddye.com/product.php?productid=16197&cat=0&page=1.
> This is a company that specializes in chemicals and dyes for people
> working with fibers and fabrics.  Unless you are planning on doing a lot
> of toning with this, I would recommend buying the 8 ounce minimum
> quantity.  A little goes a long way and, over time, the dry chemical
> goes bad.  The powder changes from white to yellowish.  I haven't used
> mine in a couple of years and I see mine has changed.
> 
> If you have Tim's book, I highly recommend reading his article on FSA.
> If I recall correctly, Judy had an article in Post-Factory also.
> 
> Dan Williams
> Enumclaw WA
> 
> On 9/10/2011 2:22 PM, Christina Anderson wrote:
> > Thanks, Dan, I thought this might be the case unfortunately, as I have a
> bunch of thiocarbamide.... Where did you get it from in the States? I
> don't see it listed at Artcraft or Photoformulary or Bostick and
> Sullivan..
> >
> > Christina Z. Anderson
> > christinaZanderson.com
> >
> > On Sep 10, 2011, at 3:00 PM, Daniel Williams wrote:
> >
> >> On 9/10/2011 12:49 PM, Christina Anderson wrote:
> >>> Anyone know the difference between thiourea/thiocarbamide and thiourea
> dioxide, and are they at all interchangeable in photographic
> processes/toning?
> >>>
> >>> Christina Z. Anderson
> >>> christinaZanderson.com
> >>>
> >>> _______________________________________________
> >>> Alt-photo-process-list | http://altphotolist.org/listinfo
> >>>
> >>>
> >> Christina,
> >> They are different and produce distinctly different results.
> >>
> >> Thiourea/thiocarbamide - different names for same thing - is an
> "odorless" sepia toner.
> >>
> >> Thiourea dioxide is different and is also called FSA (formamidine
> sulphinic acid and is also known as Manotone toning. As if it needed still
> more names, the supplier I bought it from calls it Thiox.
> >>
> >> Tim Rudman has articles on both these toners is his toning book.
> >>
> >> Dan Williams
> >> Enumclaw WA
> >>
> >>
> >> _______________________________________________
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> > _______________________________________________
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> >
> >
> 
> 
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