Chris,
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.
Marek
> 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 > >
Don't get caught with egg on your face. Play Chicktionary! Check it out!