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Subject: Re: [Homebrew_PCBs] Re: Muriatic acid + drug store hydrogen peroxide

From: Yngve <yd_br@...>
Date: 2010-02-14

OK, the instruction I've read are on the trimer, which requires cooling. Looks like it _can_ occur accidentally too. So now we're all suspected terrorists.

--- On Sun, 2/14/10, Stefan Trethan <stefan_trethan@...> wrote:

From: Stefan Trethan <stefan_trethan@...>
Subject: Re: [Homebrew_PCBs] Re: Muriatic acid + drug store hydrogen peroxide
To: Homebrew_PCBs@yahoogroups.com
Date: Sunday, February 14, 2010, 1:57 PM







 









Would be nice if you could correct wikipedia.



ST



On Sun, Feb 14, 2010 at 4:39 PM, Yngve <yd_br@yahoo. com> wrote:

> That's rubbish. Make a search on how acetone peroxide actually is produced and the needed care and equipment. Besides, it would stay in solution and decompose at the temperatures used for etching.

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> That people actually believe these old wives tales is the cause of the hassle at airports and restrictions on access to useful but largely innocuous materials.

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> --- On Sun, 2/14/10, toddroberts2001@ aol.com <toddroberts2001@ aol.com> wrote:

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> From: toddroberts2001@ aol.com <toddroberts2001@ aol.com>

> Subject: Re: [Homebrew_PCBs] Re: Muriatic acid + drug store hydrogen peroxide

> To: Homebrew_PCBs@ yahoogroups. com

> Date: Sunday, February 14, 2010, 1:12 PM

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>      Hi All,

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> I don't know if this has been covered before but in using the  chemicals

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> Muriatic Acid (hydrochloric acid) and Hydrogen Peroxide to etch

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> circuit boards with - if someone accidentally spilled some  acetone

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> into the etchant mix they could inadvertently produce a high  explosive

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> called Acetone Peroxide. Some people use Acetone to clean the copper

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> boards with prior to etching so it is possible the chemicals could be

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> accidentally mixed together. I believe the reaction produces white

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> crystals that are the highly unstable explosive Acetone Peroxide.

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> There is no such danger when using ferric chloride. Just a reminder  to

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> be careful when using these chemicals.

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> Todd R

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