U of S | Mailing List Archive | alt-photo-process-l | RE: Javelle water and gum 1907

RE: Javelle water and gum 1907

The most common industrial hypochlorites are: sodium and calcium.  Potassium hypochlorite was the original Javelle water. There are a few more hypochlorites used in very specialised applications today. All of them act as bleach, regardless of the cation. It is the ClO- that is responsible for bleaching.

> Date: Thu, 20 Dec 2007 08:41:13 -0700
> From: zphoto@montana.net
> Subject: Javelle water and gum 1907
> To: alt-photo-process-l@usask.ca
> I found another mention of Javelle water in my notes--a blurb about using it
> on overexposed gum prints at a 2-3% dilution. It said in there (scientists,
> have a heyday with this one) that "apparently it attacks the underlying
> parts and not the surface of the image if allowed to act too long".
> The use of this as well as chlorine water or "chloride of lime" (what is
> this??) was suggested by Wharton Simpson in 1868 for CARBON prints. But it
> also suggests in there to use it "locally" with a brush, which I thought was
> interesting in this javelle discussion.
> Chris
> Christina Z. Anderson Assistant Professor
> Photo Option Coordinator
> Montana State University
> Box 173350
> Bozeman, MT 59717
> 406.994.6219
> CZAphotography.com

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