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Author Topic: Any Chemists or Chemistry boffins onboard?  (Read 3507 times)

Offline Teutonic_Tamer

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Any Chemists or Chemistry boffins onboard?
« on: February 01, 2012, 07:03:29 pm »
A pondering question or two on ethylene glycol . . . and its variants . . .
Sean - Independant Automotive Engineering Technician (ret'd)
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Offline Frodo-anni

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #1 on: February 01, 2012, 08:51:32 pm »
My friend is a Dr of Chemistry and all things boffing, she is right brain box. Seeing her friday night, what question is to be asked?
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Offline damoegan

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #2 on: February 01, 2012, 09:15:24 pm »
I work with 3 chemists and can ask tomorrow for you  :happy2:

Offline Hurdy

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #3 on: February 01, 2012, 10:10:51 pm »
Welcome back Sean, what do you want to know?
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Offline Teutonic_Tamer

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #4 on: February 01, 2012, 10:12:06 pm »
What is the difference between 'mono-ethylene glycol' (MEG) and 'poly-ethylene glycol' (PEG)?  Specifically, why can one kill you, and not the other - when they seem to be very similar compounds?

Thanks in advance.  :drinking:
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Offline Hurdy

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #5 on: February 01, 2012, 10:29:03 pm »
Mono ethylene glycol breaks down with the acid in the body to produce a toxic acid called oxalic acid which affects the Heart and kidneys. Poly ethylene glycol is as it says - a polymer and doesn't react in the same way and so doesn't produce the oxalic acid. Instead it actually helps remove certain proteins in the body under medical applications. I can't remember the full reaction as it was an awful long time ago!
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Offline Teutonic_Tamer

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #6 on: February 01, 2012, 10:44:47 pm »
Mono ethylene glycol breaks down with the acid in the body to produce a toxic acid called oxalic acid which affects the Heart and kidneys.
Ahhh - that's why anti-freeze is particularly fatal for cats.  How much is bad in humans?


Poly ethylene glycol is as it says - a polymer and doesn't react in the same way and so doesn't produce the oxalic acid. Instead it actually helps remove certain proteins in the body under medical applications. I can't remember the full reaction as it was an awful long time ago!
Its used as a laxative (Movicol, Laxido, etc).  It seems to draw water into the bowel.  When used in excess, it turns your poo the same consistency as Mr Whippy ice cream . . . . me thinks thats what they used in the 'Two Girls, One Cup' video!  :booty:  PEG can have some nasty side effects though - which arn't pleasant for anyone else in the vicinity!  :sick:

They both produce the same visual reaction when mixed with H2O - very similar to alcohols . . . .
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Offline Hurdy

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #7 on: February 01, 2012, 11:00:33 pm »
Should I be answering questions about "bad amount for humans" on an open forum? :scared:

Let's just say don't drink a glass of it!
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Offline Teutonic_Tamer

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #8 on: February 03, 2012, 02:18:26 pm »
Has anyone else found any further info?
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Offline Hurdy

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #9 on: February 03, 2012, 07:27:43 pm »
Has anyone else found any further info?

There's a few bits on Wikipedia. Tells you a little more. :happy2:
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Offline Teutonic_Tamer

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #10 on: February 03, 2012, 08:51:24 pm »
Has anyone else found any further info?

There's a few bits on Wikipedia. Tells you a little more. :happy2:
Ahhhh . . . that fountain of heavily censored bias!  :stupid:

Just don't get me started on their Tramadol article!  :fighting:

I was trying to get info from peeps who actually work in the industry, rather than being bombarded by the bulsh!t which afflicts wikipedia.

Anyway, I take it say a mouthfull of dilute MEG wont do any permanent damage to moi?  :chicken:
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Offline stealthwolf

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #11 on: February 03, 2012, 08:59:25 pm »
MEG is a neddy no-no. Toxic in low quantities - more than  0.1 g/kg (0.09 mL/kg) means urgent hospital admission.

PEG sounds like it should be okay.

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Offline Teutonic_Tamer

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #12 on: February 03, 2012, 10:12:10 pm »
MEG is a neddy no-no. Toxic in low quantities - more than  0.1 g/kg (0.09 mL/kg) means urgent hospital admission.
Well, it was about 9 months ago . . . and I'm still alive . . . I think!  :laugh:

I was just wondering . . . probably about say 10ml of neat MEG . . . I'm what, 80kg (?? 13st).  Any lasting symptoms I need to worry about?


PEG sounds like it should be okay.
PEG is Movicol - so I hope its okay!  :booty:

It does give me EVIL f@rts though - I think my botty needs an ASBO!  :ashamed:
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Offline stealthwolf

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #13 on: February 03, 2012, 10:15:42 pm »
At 80kg, 7.2ml is the point at which you should seek medical attention.

I know you're not gonna go do anything stupid but I still feel I should openly state that taking MEG is harmful and potentially dangerous. It can royally mess up your kidneys, leading to disordered blood chemistry and hence death.

The GTI isn't just a machine. It's very much a living, breathing thing.

Offline JackG

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Re: Any Chemists or Chemistry boffins onboard?
« Reply #14 on: February 03, 2012, 10:30:45 pm »
 :popcornsoda: I have no idea what your talking about but it sounds good  :signLOL:

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