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another witerizing thread


h60swimmer

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Propylene glycol is probably on GRAS only because it was grandfathered in -- GRAS started in the late 50's early 60's. I checked on the MSDS last year during one of the discussions for both ethylene glycol and propylene glycol. The LD50 (lethal dose for 50% of the population) for propylene glycol was about 1/5 that of ethylene glycol. So that is why it still kills 88's lawn, but only 20% of it vs. if he used the green stuff.

If I recall too, the half life wasn't too long, so seeding in a few weeks will have you practice putting again on the front lawn in no time.

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....I checked on the MSDS last year during one of the discussions for both ethylene glycol (green)and propylene glycol (pink)The LD50 (lethal dose for 50% of the population) for propylene glycol (pink) was about 1/5 that of ethylene glycol (green). So that is why it (the pink stuff) still kills 88's lawn, but only 20% of it vs. if he used the green stuff.

I thought the pink stuff was not as toxic as normal stuff.

Correct. I think skislut just got the names reverse (or I don't understand the system, which is possible). The pink is 1/5 as toxic as the green. Crazy.gif

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Um, I think slut is right. And so are you. Where's the discrepancy?

Maybe I just don't understand the "Lethal Dose" verbage...

The LD50 (lethal dose for 50% of the population) for propylene glycol (pink) was about 1/5 that of ethylene glycol (green).

I read that as "The lethal dose of pink is 1/5 of that of the green." Using imaginary numbers...the lethal dose of pink = 2 oz, then the lethal dose of green would be 10oz...making the pink more toxic, which is not the case.

Michael's only 1/5 as much of a slut...

:blush:

Edited by NorCaliBu
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AAHhhhhhh, now I see your confusion. Now I'm confused. And perhaps Michael is 1/5 more of a slut. Would that make him 100% whole slut or 6/5ths whorrible? Or would that be whorrable?

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Sorry about the confusion Mike --

This data is for Lethal Dose for 50% of the population in lab rats.

Ethylene glycol (green antifreeze) = 4.7 grams of ethylene glycol / Kg (weight of rat)

Propylene Glycol (pink antifreeze) = 20 grams / Kg

If humans metabolize similarly to rats (which I think we are close) -- it would take about 16 oz. of green antifreeze to possibly kill a 220# man. Translate that to my 50# daughter and that is only about 1/3 of a 12 oz can -- and since ethylene glycol tastes somewhat sweet -- I shudder to think.

Edited by skislut
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