Can Milk Spoil the Clear Coat? - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 08-16-2004, 01:58 PM
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This may sound little strange but this is what happened,

Somebody spilled milk on one of my friends 2002 Black BMW, after taking it to a detail shop, they cleaned most the things but they are not able to take out some traces of Milk and something is still visible (only if you see it in sun or something, not sure itís from milk or not) and detail shop guys say that the milk has gone through the clear coat and the car will need a new clear coat to get rid of those spots??

Does milk can really such damage to clear coat?

Thanks
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#2 (permalink) Old 08-16-2004, 02:20 PM
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Hmm.... this post could be useful... if you know some people you hate... and you have some spare milk....... sorry I had too....


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#3 (permalink) Old 08-17-2004, 12:27 AM
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milk??? Milk is not acidic...it actually is a base. So why and how would it go thru the clear coat?

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#4 (permalink) Old 08-17-2004, 12:12 PM
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it looks like after the milk was spilled the car was in the parking lot under the sun for three days and thats the reason milk got into the clear coat,

I still can't believe that the damn milk can spoil it
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#5 (permalink) Old 08-17-2004, 06:53 PM
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If it was sitting for several days, I can imagine lots of bacteria breaking down the milk (same as "spoiling"). The metabolism would then be acidic, which could break down the clear coat/pain in general.

BTW this is how you get cavities -- bacteria living off the sugars etc on your teeth, excreting acidic waste which dissolves your enamel.
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#6 (permalink) Old 08-17-2004, 09:19 PM
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No use crying over spilled milk.....

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#7 (permalink) Old 08-18-2004, 05:58 AM
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yea i guess that makes sense. Spoiled milk is acidic. True dat.

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#8 (permalink) Old 08-18-2004, 05:10 PM
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a base has corosive properties as well....

http://web.jjay.cuny.edu/~acarpi/NSC/7-ph.htm

says milk is a mild acid.

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#9 (permalink) Old 08-18-2004, 05:32 PM
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That's true about milk being a mild acid. I saw an episode of MacGyver where he used milk to nuetralize a component of a bomb that was acid (he was on a cruise ship - seen it?). So then I step to my chemistry/physics teacher and share my Macgyver knowledge that milk is a base. (Plus it helps calm an acid stomach).

Anyway Mr. physics puts my ass to shame and shows the class that milk actually has acidic properties. Chuuch.

Oh yeah, and true that about the killer corrosive properties of strong bases. They are just as bad as strong acids.

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#10 (permalink) Old 08-18-2004, 06:51 PM
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true.

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#11 (permalink) Old 08-18-2004, 10:43 PM
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i used to work with both stong acids and bases... i would watch a base eat silicon wafer down to thinner than paper. and then later it got dumped in acide to stop/slow the process.... i worked with all kinds of shit that would just asume eat the crap outa you... i saw (never got) some nasty chemical burns from the Potasium Hydroxide(KOH?)and HCL... and worked around Hydro Floric... i cant ever remember all the shit i worked with.. .

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#12 (permalink) Old 08-25-2004, 07:40 AM
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How can a mild acid neutralise a strong acid??? are you stupid??? is your physics teacher stupid??? maybe he ought to stick to physics instead of chemistry which he obviously knows nothing about. Acids are neutralised by alkalines and vice versa - that's why antacids and milk (which are alkaline based) neutralise the acid in your stomach. Also strong alkalines can have the same burning effect as an acid.


PS 007ben, its Hydrochloric you Dumbass fuckwit.
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#13 (permalink) Old 08-25-2004, 09:37 AM
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Quote:
Originally posted by BeelZibub@Aug 25 2004, 07:20 AM
How can a mild acid neutralise a strong acid??? are you stupid??? is your physics teacher stupid??? maybe he ought to stick to physics instead of chemistry which he obviously knows nothing about. Acids are neutralised by alkalines and vice versa - that's why antacids and milk (which are alkaline based) neutralise the acid in your stomach. Also strong alkalines can have the same burning effect as an acid.


PS 007ben, its Hydrochloric you Dumbass fuckwit.
What the hell was THAT all about? Be careful calling someone else a dumbass or you may look like one yourself. I can't find much in your short post that is true,

1. Milk, if you look at the link above, overall has a pH that is less than 7, which makes it a weak acid

2. Strong bases do NOT have the same effects as strong acids. They react totally differently.

3. Where did anyone say an acid was neutralizing an acid?


Hydrofluoric acid (HF) is real, and it is one of the nastiest things around. There is such a thing. Learn more chemistry, please, before criticising.
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#14 (permalink) Old 08-25-2004, 01:44 PM
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and Potasiumhydoxide is a strong base not an acid. and they use a weak acid to slow it down/neturalize.

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