[meteorite-list] Alcohol + water + NaOH

From: Aras Jonikas <arasj3827_at_meteoritecentral.com>
Date: Thu, 12 Sep 2013 16:48:57 +0000 (UTC)
Message-ID: <358130122.2756756.1379004537357.JavaMail.root_at_sz0150a.emeryville.ca.mail.comcast.net>

I have?purchased Nital from chemical-supermarket.com. Premixed and much easier to not have to worry about improper mixing?techniques and proper?ratios. Shipping is a little costly due to safety, but still worth it for me. I normally get the Nital 10% Nitric, but they have different ratios available. They have a?69.5% concentration of nitric acid also if you want.

http://www.chemical-supermarket.com/Nital-10-Nitric-250ml-Micro-Etch-Solution-p425.html

Aras



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From: "Joshua Tree Earth & Space Museum" <dorifry at embarqmail.com>
To: "Meteorite List" <meteorite-list at meteoritecentral.com>
Sent: Thursday, September 12, 2013 10:17:36 AM
Subject: [meteorite-list] Alcohol + water + NaOH

Francesco:

Do you mean sodium nitrate (NaNO3)?

While we're on the topic, which solution of nitric acid works best for
making nitol? The purest I can find seems to be 67.2%. What would be the
ratio of alcohol added to make nitol?

Phil Whitmer
Joshua Tree Earth & Space Museum


Hello, I have a roughly cutted Muonionalusta slice to make beatiful.
I will grind, polishing and etching it ... and after for prevent rust and
stabilize it I'm planning to use the method alcohol + water + NaOH .
But I have few question:

Ethanol at 96% works fine?
I have to use distilled water or normal water?

For 100ml of solution I have to use 70ml of ethanol and 30ml of water, is
this proportion correct?
How many grams (or spoons) of NaOh I have to use?
How many days I have to leave the slice in the solution? 7-10 days? In this
period I have to change the solution or the first potion works fine for all
these days?

And after? What I have to do? I have to wash it with ethanol and after dry
up in oven, 80?C?
After could I also put some rust prevent varnish?

Any other tip are welcomed!!!

Thanks a lot!!!
Francesco!

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Received on Thu 12 Sep 2013 12:48:57 PM PDT