Re: chrysotype and 21 steps

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From: garimo (omirag@cruzio.com)
Date: 11/16/00-08:24:33 PM Z

I received 100g. of 3,3' thiopropionic acid for $45.10 from:
First Reaction
37 Depot Rd.
Hampton Falls, NH 03844
PH: 603-929-3583
Fax: 603-929-5023
 
 Also a good(?) source for metals. in Sept. Ammonium
tetrachlorplatinate was $28.60 g. Chloroauric acid was $17.25 g.

>The correct term is: 3,3' thiopropionic acid (or beta, beta'-propionic
>acid) or 3-mercaptopropionic acid. (Interestingly, the 2-mercapto compound
>is the substance in onions that causes tears.) If you find a retail source
>for this substance, let me know, as it is used industrially in resins and I
>don't know of any other common usage.
>
>
>Sil Horwitz, FPSA
>Technical Editor, PSA Journal
>teched@psa-photo.org
>silh@earthlink.net
>Visit http://www.psa-photo.org/
>Personal page: http://home.earthlink.net/~silh/

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