On Tue, 28 Jun 2016 19:19:53 -0700 (PDT), bob_villain
wrote:

On Tuesday, June 28, 2016 at 9:06:39 PM UTC-5, wrote:
On Tue, 28 Jun 2016 18:33:26 -0700 (PDT), bob_villain
wrote:


Aerosol cans, at least the butane ones, are designed to blow out a seam
in a controlled fashion, not just blow up.

CO2 is almost universally used now...unless you're talking about the fuel itself. WD-40 was a great thing for starting small engines...when it was pressurized with propane!

There are plenty that shoot fire when you hold a lighter in front of
them.

I understand your point, but propellants have changed...if they worked more efficiently...they should have stayed with the flammable gases.

The problem with CO2 is the vapor pressure is 25 times that of butane
and 150 times that of freon. It would take a very substantial can to
hold liquid CO2 and if it is not liquid, you might as well use air.
You are not going to propel much product with a gas.