From: Jack Fulton (jefulton1@attbi.com)
Date: 09/08/02-09:37:01 PM Z
Holy Cow . . nitric acid is a lot tougher, rougher and meaner than acetic
acid AND also sulfuric acid. It is nothing to mess with at all.
AND, if you mix hydrochloric and nitric acids you will achieve 'aqua regia',
or, royal water. this will dissolve gold and platinum.
On the order of being dangerous it is:
1. acetic acid normal
2. glacial acetic (a concentration)
3. hydrochloric acid
4. sulfuric acid
5. nitric acid
6. aqua regia
Either 28% acetic acid or glacial acetic acid are our mainstays in
photography. In a pinch, a clear vinegar could be used as a stop also
Hydrochloric acid in a dilute form used to clean fireplace soot dirty
ceramic tile and concrete driveways is called muriatic acid.
Sulfuric acid is used in car batteries and will etch away your clothing in
a short amount of time.
Nitric acid is laboratory stuff.
Aqua regia is for professional people who know what they are doing .. .
only.
Jack
> From: "Christina Z. Anderson" <zphoto@montana.net>
> Reply-To: alt-photo-process-l@sask.usask.ca
> Date: Sun, 08 Sep 2002 11:07:39 -0600
> To: Alt Photo List <alt-photo-process-l@sask.usask.ca>
> Subject: acids
>
> I'm still working on this mordancage thing. Question: what is the
> difference between acetic acid and nitric acid? I mean, in activity, as I
> know the compounds are different. It seems probable that the acetic is more
> innocuous perhaps? Is nitric in any way dangerous to use, e.g. fumes etc.?
> Any comments would be welcome to a non-chemist such as myself. (I did the
> mistake of doing early admissions into college, missing my senior year in
> highschool, and avoided the high school chem class and college as well. What
> a mistake.)
> Chris
>
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