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Re: Hydrofluoric Acid

To: shop-talk@Autox.Team.Net
Subject: Re: Hydrofluoric Acid
From: Bob Moore <mustang@best.com>
Date: Wed, 5 Feb 1997 17:34:51 -0800 (PST)
We use it in our semiconductor failure analysis lab as a "glass" etch, it
eats silicon dioxide, also flesh with no pain, until it reaches bone . . . 

-bob moore

http://www.vntg-mustang.com and other '60's type projects ;-)!



On Thu, 6 Feb 1997, The Honjos wrote:

> This is a chemistry question.
> 
> I picked up a bottle of chrome wire wheel cleaner and noticed that 
> they contained phosphoric acid and hydrofluoric acid.  In fact, I 
> realize that most CWW cleaners have it.  Now the phosphoric acid I 
> understand -- it's a rust remover, and also provides a skin on top 
> after the rust is removed.  What does the hydrofluoric acid do?
> 
> Regards
> Makoto Honjo
> Phone/Fax +81-3-3473-1848
> 


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