[meteorite-list] ACID FOR ETCHING: QUESTION

[Charles Viau]

While Ferric Chloride is safer, it is much slower… and it seems (to me
anyway) that the etched definition is much lower….
 
I have found a good source for small quantities of nitric acid to be
jewelers, especially those that plate gold.
They mix hydrochloric with nitric to make aqua regia, an acid powerful
enough to dissolve gold. Very dangerous stuff and certainly not an acid that
you would ever use on a meteorite, unless you want to see it disappear…
however many will sell you a small amount of nitric if you ask. Again, they
use the pure stuff so be real careful… take it home wrapped in lots of paper
in a box.  Dilute it!  Typical is a 5% Nitric solution using 100% denatured
ethyl alcohol  (not the isopropyl type in water) or 1 part pure nitric in 19
parts alcohol.     
Standard chem. 101 safety statement : Add acid into alcohol!, not alcohol
into acid! , wear goggles, use latex gloves and do it in the garage, not the
house…
 
CharlyV
 
   _____  

From: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of mark ford
Sent: Thursday, November 16, 2006 10:25 AM
To: meteorite-list at meteoritecentral.com
Subject: Re: [meteorite-list] ACID FOR ETCHING: QUESTION
 
Try Ferric Chloride much better and safer.  - Available from electronics
stores
 
 
 
   _____  

From: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of
jwb7772 at netzero.net
Sent: 16 November 2006 01:45
To: meteorite-list at meteoritecentral.com
Subject: [meteorite-list] ACID FOR ETCHING: QUESTION
 
Hi to all list members!
     It has been a long time since I have needed a new bottle of nitric
acid.  So long that the last time I bought a bottle, it was at a drug store.
Really!  Short of going 25 miles to a collage chem store, where would be the
best place to get a bottle of acid?  No one around my town has any!  Any
help would be appreciated.  Thanks,  Jim Balister

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