[TheForge] Re: Superquench Freeze?

[Dann Johnson]

I don't think that my 5 gallon bucket of super quench  froze until  
prolonged sub zero temps. On cold nights, an unheated shop usually stays 10 
to 20 degrees warmer than the outside.  Even if the bucket  started freezing 
around the sides, wouldn't the salt tend to be concentrated in the middle?  
One hot rod of steel to the center and away you go. 

Dann 

marilyn traber 011221 writes: 

> From: "Bruce Freeman" <FREEMAB at pt.fdah.com>
> To: <theforge at mailman.qth.net>
> Sent: Tue, 20 Dec 2005 09:18:48 -0500
> Subject: Re: [TheForge] Superquench Freeze? 
> 
>> I don't know from practical experience.  I've never seen it freeze 
>> in NJ, but I may not have checked it at the right time - and NJ 
>> winters are NOT like MN's! 
>> 
>> I calculate superquench to be about 11% salt, from which tables tell 
>> me it should freeze at about 20 F.  Not sure I believe those numbers,
>>  though. 
>> 
>> Bruce
>> NJ
> 
> Bruce- 
> 
> Couldn't you use the formula which determines the change in the molar values 
> of the ingredients in water to determine the freezing point? In other words, 
> if you've got X moles of solute in Y moles of solution, the important temps 
> (freezing point, boiling point, vaporization point) change at a fixed rate. 
> 
> Of course, me being me, I'd just get some superquench and a thermometer, 
> throw it in the freezer, and check on it every so often, see if my freezer 
> went down low enough to 

freeze it.
> 
> Phlip
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Dann Johnson