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Vinegar and aluminum

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Coxyzxr
Brolly Dolly



Joined: 22 May 2008
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PostPosted: 14:40 - 03 Jul 2009    Post subject: Vinegar and aluminum Reply with quote

Anyone know if Vinegar will eat into aluminum at all?
Want to clean some engine components and worried it will actually eat into my aluminum block.
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Finglonga
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PostPosted: 14:51 - 03 Jul 2009    Post subject: Reply with quote

Can be used to clean BUT don't leave it on there for long periods as it is acidic after all.
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Coxyzxr
Brolly Dolly



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PostPosted: 14:52 - 03 Jul 2009    Post subject: Reply with quote

Finglonga wrote:
Can be used to clean BUT don't leave it on there for long periods as it is acidic after all.


My thoughts also.

Kind regards.
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stinkwheel
Bovine Proctologist



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PostPosted: 15:28 - 03 Jul 2009    Post subject: Reply with quote

Why don't you use an engine cleaner like Gunk instead?
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Ichy
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PostPosted: 21:26 - 03 Jul 2009    Post subject: Reply with quote

Vinegar, aka acetic acid, doesn't hurt aluminium, in fact they use aluminium tanks to ship the stuff around. Its alkalines, sulphuric acid, or nitric acid that eats aluminium.
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Coxyzxr
Brolly Dolly



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PostPosted: 22:19 - 03 Jul 2009    Post subject: Reply with quote

Ichy wrote:
Vinegar, aka acetic acid, doesn't hurt aluminium, in fact they use aluminium tanks to ship the stuff around. Its alkalines, sulphuric acid, or nitric acid that eats aluminium.


Awesom very helpful thanks.

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stinkwheel
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PostPosted: 09:46 - 04 Jul 2009    Post subject: Reply with quote

Not strictly true, aluminium is very reactive and dissolves in acids readily.

However, aluminium is SO reactive that a thin layer of aluminium oxide forms over its surface almost as soon as the bare metal is exposed. Aluminium oxide is not very reactive and so protects the underlying metal from further damage.

Aluminium acetate (the compound that forms when aluminium metal reacts with vinegar) is soluable so if you were to be scrubbing the surface of the aluminium while in contact with vinegar, it would slowly be eaten away. This process would however take quite some time.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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buddy
Trackday Trickster



Joined: 07 Mar 2009
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PostPosted: 10:35 - 04 Jul 2009    Post subject: Reply with quote

aluminum oxide is chemically identical to platinum and so is one of the most unreatcive things about

just my 2 cents Razz
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stinkwheel
Bovine Proctologist



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PostPosted: 11:31 - 04 Jul 2009    Post subject: Reply with quote

buddy wrote:
aluminum oxide is chemically identical to platinum and so is one of the most unreatcive things about

just my 2 cents Razz


There are so many things which are incorrect about the above statement, I don't know where to start.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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Finglonga
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PostPosted: 13:51 - 04 Jul 2009    Post subject: Reply with quote

stinkwheel wrote:
buddy wrote:
aluminum oxide is chemically identical to platinum and so is one of the most unreatcive things about

just my 2 cents Razz


There are so many things which are incorrect about the above statement, I don't know where to start.


Lol , buddy Google Aluminium Oxide for starters. Wink
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ZRX61
Victor Meldrew



Joined: 05 Nov 2003
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PostPosted: 19:06 - 04 Jul 2009    Post subject: Reply with quote

If you REALLY want clean aluminium parts:
Use paint stripper, it doesn't harm the metal but will remove ALL traces of carbon etc.
In the US there is an aerosol product for cleaning old pots & pans called "carbon-off".. It's basically aerosol paint stripper..

See here:
https://www.nextag.com/carbon-off/compare-html

I use it to clean up aircraft firewalls & exhaust stacks. Cool
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buddy
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PostPosted: 19:58 - 04 Jul 2009    Post subject: Reply with quote

ok well i wasnt far off, it says its chemically similar to ruby and saphire

and yes, thay are pretty unreactive

i got 1 word wrong WOW
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stinkwheel
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PostPosted: 22:06 - 04 Jul 2009    Post subject: Reply with quote

buddy wrote:
ok well i wasnt far off, it says its chemically similar to ruby and saphire

and yes, thay are pretty unreactive

i got 1 word wrong WOW


I'll admit it was the similarity to platinum that was getting me.

Also in the grand scheme of unreactive chemicals, aluminium oxide can still be made to react with stuff. Yes it is very unreactive but it's quite a long way from being totally inert.

I could probably rig a "garage" experiment (if I had the time and inclination) using powdered aluminium oxide and magnesium that would almost certainly come under the heading of "vigorous" if not approaching "dangerously explosive".
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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Coxyzxr
Brolly Dolly



Joined: 22 May 2008
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PostPosted: 22:12 - 04 Jul 2009    Post subject: Reply with quote

For what it's worth I found some concentrated Sodium hypochlorite in a shed that I initially thought was acid (label had fallen off) and thought "Hmm, yeah acid clean some stuff"

So I tried it out on an old brake caliper, it pretty much just ate the caliper, all of it.

Fumes were quite noxious too.
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Adrian
Spanner Monkey



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PostPosted: 22:13 - 04 Jul 2009    Post subject: Reply with quote

Lol, i never knew we have so many scientists among us Very Happy cool stuff...
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Omega
Crazy Courier



Joined: 07 May 2009
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PostPosted: 02:25 - 05 Jul 2009    Post subject: Reply with quote

stinkwheel wrote:
I could probably rig a "garage" experiment (if I had the time and inclination) using powdered aluminium oxide and magnesium that would almost certainly come under the heading of "vigorous" if not approaching "dangerously explosive".


Can we be expecting to see this in the "Show and Tell" section any time soon? Very Happy
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stinkwheel
Bovine Proctologist



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PostPosted: 10:28 - 05 Jul 2009    Post subject: Reply with quote

Omega wrote:

Can we be expecting to see this in the "Show and Tell" section any time soon? Very Happy


No, because I have neither the time nor the inclination.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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