On 12/19/2015 7:04 PM, Tony Hwang wrote:
Uncle Monster wrote:
On Saturday, December 19, 2015 at 2:58:03 PM UTC-6, M. Stradbury wrote:
On Fri, 18 Dec 2015 18:59:52 -0700, Tony Hwang wrote:

There is winter grade propane.

Really?

You sure?

Propane is a simple chemical.

C-C-C

How do they make 3 carbons (and a few hydrogens) a "winter" grade?

The supplier mixes in hydrogen.ヽ(€¢€¿€¢)ノ

[8~{} Uncle LPG Monster

We used to fill winter grade on our camping trailer to use in winter
time. I heard it is mixed with Butane to keep it from freezing. Well
there is winter grade gasoline too.

I don't remember 'all" of my chemistry. But butane
(four carbons, BTW) freezes easier than propane. If
memory serves, liquid butane has a boiling point of
+32F, and propane boils at -40F. Not sure about
freezing, but we are concerned with the boiling point
when discussing fuel vapor devices and tanks.

You can tank me later.

..
Christopher A. Young
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