[alt-photo] Re: thiourea/thiourea dioxide

[Paul Viapiano]

And don't forget that the usual thio toning formula using thiourea (Sol A) 
and sodium hydroxide (Sol B), can also be altered by using sodium carbonate 
instead of the hydroxide in Sol B, hence the thio-carbamide reference.

At least that's my story and I'm sticking to it...


----- Original Message ----- 
From: "Christina Anderson" <zphoto at montana.net>
To: "Alt List" <alt-photo-process-list at lists.altphotolist.org>
Sent: Saturday, September 10, 2011 12:49 PM
Subject: [alt-photo] thiourea/thiourea dioxide


> 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
>
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