[alt-photo] Re: gumprints

[Loris Medici]

Oh, I see. Potassium dicromate's decomposition temperature is above
300C, ammonium dichromate's is above 150C. To my knowing, both won't
boil / evaporate but simply decompose. So, if you're not going to use
such high temperatures (unlikely) you're on the safe side. Besides, I
don't think there will be unreacted dichromate in the print. So, don't
worry! :)

BTW, the online documentation states 80C for Fusion 4000. (Couldn't
find anything regarding duration. You'll have to do some testing
and/or contact Keith Taylor:
http://www.keithtaylorphoto.com/contact.html)

Regards,
Loris.


2011/10/10 Drs. G. Hoekstra <ghoekstra at solcon.nl>:
> Dear Loris,
>
> The product has very little to say about it. I didn't mean the fumes from
> the tissue, but of the dichromate in the gumprint.
>
> Geert
>
> -----Oorspronkelijk bericht-----
> Van: alt-photo-process-list-bounces at lists.altphotolist.org
> [mailto:alt-photo-process-list-bounces at lists.altphotolist.org] Namens Loris
> Medici
> Verzonden: zondag 9 oktober 2011 13:32
> Aan: The alternative photographic processes mailing list
> Onderwerp: [alt-photo] Re: gumprints
>
> Geert,
>
> Doesn't the Fusion 4000 product have a manual and/or MSDS?
>
> Removal: I think that is pretty time & temperature dependant; you
> should be able to find some recommendations about what temperature and
> time you should use to undo the bound - w/o harming the artwork.
> (Manual / instructions / product sheet...)
>
> Fumes: I don't think the product gives off toxic / harmful fumes upon
> heating, since that's how it's used. (MSDS...)