[meteorite-list] Etching Compounds

[Adam Hupe]

Hello List,

This topic reminds me of the "Magic Cleaning Potion" we purchased from a
hippie at the Denver show last year.  We figured it was a combination of
acids after accidentally reverse etching some Tazas with it.  He was right
this potion was capable of cleaning things. Not only did it etch our Tazas
from the outside-in giving them a 3D appearance, it disintegrated a 2'
square hole in our driveway after eating through a seam in a tin bucket. We
can hardly wait to give this dude a piece of our mind this year as this
potion gassed us out of our shop with a noxious brown cloud and damaged a
bucket, ~ 400 grams of Tazas and our driveway.  Be careful when using any
type of acids to etch or clean with.

All the best,


------------------------------------
Adam Hupe
The Hupe Collection
Team LunarRock
IMCA 2185
raremeteorites at comcast.net


----- Original Message ----- 
From: <MexicoDoug at aol.com>
To: <VeIocity at aol.com>; <meteorite-list at meteoritecentral.com>
Sent: Friday, September 10, 2004 11:49 AM
Subject: Re: [meteorite-list] Etching Compounds


> Hola,
> Concentrated nitric acid is about 16 molar (70%).
>
> You don't want any water you can avoid.  It is then diluted (by pouring
acid into alcohol) down to "1 molar" (16:1 vol/vol), but in quotes because
that should be with anhydrous, or 95% minimum ethyl alcohol....I usually
consider "molar" as in water, hence the important clarification.
> Doug
>
> careful and have fun drawing figures:)
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