Re: Gum Preservatives

To: alt-photo-process-l@usask.ca
Subject: Re: Gum Preservatives
From: sam wang <stwang@bellsouth.net>
Date: Wed, 06 Dec 2006 10:27:21 -0500
Comments: "alt-photo-process mailing list"
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Reply-to: alt-photo-process-l@usask.ca

Chris,

Actually what I used was isopropyl alcohol.

Sam

On Dec 6, 2006, at 9:41 AM, Christina Z. Anderson wrote:

So thymol goes a long way. 10g is not expensive, either. And neither is methylated alcohol, tho couldn't one use isopropyl?

It is interesting that Michael asked about using glyoxal as a preservative, because I never heard of it being that, and also, it hardens gum. But for some unknown reason they did use formaldehyde as a preservative in gum back in the day. Seems so strange to me.
Chris

Follow-Ups:
- Re: Gum Preservatives
  - From: "Christina Z. Anderson" <zphoto@montana.net>

References:
- RE: Gum Preservatives
  - From: Loris Medici <mail@loris.medici.name>
- Re: Gum Preservatives
  - From: "Christina Z. Anderson" <zphoto@montana.net>