[meteorite-list] Alcohol + water + NaOH

[Aras Jonikas]

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 



  






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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