[AT] @$#@$#% Cub - red engine oil

[charliehill]

Yep I agree with you there completely.  Didn't know the exact percentage but 
I knew there was a certain amount of water it is hard to get out of ethanol. 
Thus Everclear is 190 proof not 200 proof.  I suspected the same was true of 
antifreeze and that amount of water would be in the antifreeze when you buy 
it.

Charlie
----- Original Message ----- 
From: "David Bruce" <davidbruce at yadtel.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Monday, August 17, 2009 9:18 AM
Subject: Re: [AT] @$#@$#% Cub - red engine oil


> An azeotrope is a physical mixture and not a unique compound.  I would
> expect to be able to remove the bulk of the water in an antifreeze/water
> mixture by evaporation but not all.  If I remember correctly there is an
> azetrope with certain proportions of each - water in excess of that
> would be free to evaporate without the ethylene glycol.  Exactly what
> proportions are needed I'm not sure.
>
> I do know one azeotrope of water and ethanol is 95/5 water/alcohol -
> true anhydrous ethanol is quite hard to manufacture.  The azeotrope of
> methanol and water has a bit more water but is still flammable. This is
> why methanol is common in "dry gas" formulas.
>
> David
> NW NC
>
>
>
> charliehill wrote:
>> That could be right David.  It's just the first thing I thought of.  Not
>> sure about the chemistry.  If you are correct the water and antifreeze 
>> would
>> have to form a new compound and not just be a hydroscopic mixture I 
>> think.
>>
>> Charlie
>>
>>
>> ----- Original Message ----- 
>> From: "David Bruce" <davidbruce at yadtel.net>
>> To: "Antique tractor email discussion group" 
>> <at at lists.antique-tractor.com>
>> Sent: Monday, August 17, 2009 7:28 AM
>> Subject: Re: [AT] @$#@$#% Cub - red engine oil
>>
>>
>>> Somewhere in the recesses of this tired brain (and in my college
>>> textbooks) is the concept of an azeotrope - a physical combination of
>>> two components that has properties quite different from the individual
>>> components and is quite hard to separate by simple distillation.
>>> Water and ethyl alcohol form such and I'm thinking water and ethylene
>>> glycol (the major component in many antifreeze formulations) would do
>>> the same.
>>>
>>> The various reference books that could answer are packed away but the
>>> answer should be somewhere on the web.
>>>
>>> David
>>> NW NC
>>>
>>> charliehill wrote:
>>>> Heat it until it's somewhere between 212 and maybe 230 degrees in an 
>>>> open
>>>> top container and the water will boil off and leave the antifreeze
>>>> behind.
>>>> ( I THINK)
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