[meteorite-list] Alcohol + water + NaOH

From: Graham Ensor <graham.ensor_at_meteoritecentral.com>
Date: Wed, 11 Sep 2013 23:53:31 +0100
Message-ID: <CAJkn+kYa5dO=5mX_EVD=L9GOeL18VKaABJnr-Ji2_3LhSOPTrw_at_mail.gmail.com>

Mendy...I think Francesco is talking about the preservation process
and not the etching. I have managed to preserve irons to some degree
using NaOH solution without alcohol...but I was a bit hit and miss
with the dilution and times they were left for.

Graham

On Wed, Sep 11, 2013 at 10:29 PM, Mendy Ouzillou <ouzillou at yahoo.com> wrote:
> Francesco,
>
> As far as I know, Sodium Hydroxide will not etch iron. Did you mean NitAl (Nitric acid + Alcohol)?
>
>
> Mendy Ouzillou
>
>
>
>>________________________________
>> From: Mendy Ouzillou <ouzillou at yahoo.com>
>>To: Francesco Moser <cojack at tiscali.it>; "Meteorite-list at meteoritecentral.com" <Meteorite-list at meteoritecentral.com>
>>Sent: Wednesday, September 11, 2013 2:28 PM
>>Subject: Re: [meteorite-list] Alcohol + water + NaOH
>>
>>
>>
>>Francesco,
>>
>>As far as I know, Sodium Hydroxide will not etch iron. Did you mean NiTal (Nitric acid + Alcohol)?
>>
>>
>>
>>
>>Mendy Ouzillou
>>
>>
>>
>>>________________________________
>>> From: Francesco Moser <cojack at tiscali.it>
>>>To: Meteorite-list at meteoritecentral.com
>>>Sent: Wednesday, September 11, 2013 12:22 PM
>>>Subject: [meteorite-list] Alcohol + water + NaOH
>>>
>>>
>>>
>>>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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>>>
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>>>
>>
>>
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Received on Wed 11 Sep 2013 06:53:31 PM PDT