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Old 07-23-2009, 07:53 PM   #1
skierd OP
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How to (almost) kill yourself with brake cleaner

http://www.brewracingframes.com/id75.htm

Be careful out there guys, especially those of you welding or other high heat type jobs on the bike.
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Old 07-23-2009, 08:04 PM   #2
Inane Cathode
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Cant remember which, either r12 or r134 but when it burns it makes mustard gas.
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Old 07-23-2009, 08:34 PM   #3
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I think its r22

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Old 07-23-2009, 08:36 PM   #4
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Good warning. I used to only worry about zinc fume sickness, but since I do use carb cleaner and brake cleaners to degrease stuff that I may later weld on, this is an eye opener.

Thanks for posting.
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Old 07-24-2009, 12:33 PM   #5
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Quote:
Originally Posted by mark1305
Good warning. I used to only worry about zinc fume sickness, but since I do use carb cleaner and brake cleaners to degrease stuff that I may later weld on, this is an eye opener.

Thanks for posting.
Acetone is what we used when I did my aerospace welding apprenticeship. Put it in little squeeze bottles with a needle point so you can get it right where you want it.
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Old 07-24-2009, 07:20 PM   #6
mark1305
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Yep, I use that too. And denatured alcohol for some stuff.

My liver should glow in the dark by now from all the solvent stuff I used to expose my skin to back in the 70s in factories that never saw OSHA inspectors. Not to mention all the tax-paid ethanol it has metabolized

Maybe it's true that what doesn't kill you only makes you stronger. Hopefully...
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Old 07-23-2009, 09:05 PM   #7
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Quote:
Originally Posted by Inane Cathode
Cant remember which, either r12 or r134 but when it burns it makes mustard gas.
Mustard gas is bad but:

Quote from and A/C training manual FAQ:
They could also test for leaks before evacuating it by using an electronic "sniffer". In the past, a propane heated halide detector with an attached hose was used. Refrigerant would be sucked into the hose and cause the flame to turn bright green. This is mentioned for historical purposes only. Burning R-12 produces toxic phosgene gas and this old technique and equipment should no longer be used.

Phosgene is bad too mustard is worse if it matters............

showkey screwed with this post 07-23-2009 at 09:10 PM
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Old 07-23-2009, 09:58 PM   #8
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Any chlorinated solvent is going to cause grief if combusted. Any chlorofluorocarbon or even hydrofluorocarbon. Any of the halogens deserve plenty of respect. Fluorine is the most reactive element on the periodic table. Anyhow, thanks for the article, I've got a few different chlorinated cleaners around and I have been fairly casual in their use.
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Old 07-23-2009, 10:27 PM   #9
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Chemistry can be fun too.

But yes, vapor decomposition is definately something to watch out for. Even those cans of compressed "air" will react with other gases and mix into rather dangerous substances.

Always always always always be careful when welding... know your surroundings, know who/what's around you (dogs, kids), know what you're welding and what's on the other side of the weld....
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Old 02-28-2011, 01:03 PM   #10
def
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Quote:
Originally Posted by Anorak View Post
Fluorine is the most reactive element on the periodic table.
I believe H+ is the most reactive.
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Old 02-28-2011, 06:44 PM   #11
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I got a snootful of MEK a few years ago and thought I was going to die. I realized that and brake cleaner had no place in my home.

My Dad was a Welder/Wireman at the GE plant in Salem, VA. He retired after 33 years (100% disability and a litany of health issues)...he's told stories of dumping barrels of PCB-containing waste into the creek behind the plant. It was legal, they had a permit!

I'm cautious/paranoid around chemicals nowadays.

Occasionally, we'll get a noob at work and play a nice joke on him. We'll break a bunch of Cyalume sticks, spread the contents on the ground below the radar antenna and tell him the SF6 tank overheated (again!). It can be nasty if it really happened...always good for a laugh as the noob runs for his life.
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Old 11-14-2012, 06:12 AM   #12
mark1150
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Quote:
Originally Posted by Inane Cathode View Post
Cant remember which, either r12 or r134 but when it burns it makes mustard gas.
Freeon?
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Old 11-14-2012, 08:42 AM   #13
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Quote:
Originally Posted by Inane Cathode View Post
Cant remember which, either r12 or r134 but when it burns it makes mustard gas.
Actually, it's phosgene. And this is why one has to be careful when using a halide torch leak detector. It applies to ALL types of freon based refrigerants. This is also true of chlorinated solvents such as trichloroethane.

http://en.wikipedia.org/wiki/Phosgene
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Old 07-25-2009, 11:30 AM   #14
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Holy crap this freaks me out. I expected to see some kind of ho hum yawn fire deal.

Good info thanks.
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Old 07-25-2009, 06:50 PM   #15
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Good info to pass along.
This might merit being a sticky. At least a sticky saying "don't eat the toxic chemicals and here's why" or something.

Safety's a tough thing to stay diligent on.

Thank you for linking to it.
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