Don Bruder wrote:

Can be/is. See the rest of the thread.

I don't bother if many are wrong. :-)

At 14.5 PSI or so, pure acetylene doesn't take much more than a "dirty
look" to get a sufficiently large quantity of it to deflagrate.

Do yourself a favour:
Look at your acetylen bottle. Open it. Look at the primary pressure. It
will be around 8bar (116psi). Still living? Now look at the scale of the
primary pressure gauge. There will be a red line. It is a 18 bar (260
psi).
Don't tell me, that the pressure regulator is filled with acetone. Even
the bottle isn't filled completely with acetone. Only about 2/3 of the
bottle are. That's because you are allowed to use them tiltet (as long
as 30 deg (IIRC) out of the horizontal). Now this means, that the
acetylen _has_ pressure of 116 psi inside the bottle and the first half
of the pressure regulator.

The same quantity at 15 pounds of pressure is all but guaranteed to do so
before you even get a chance to apply the dirty look.

Nonsense.

What's INSIDE the cylinder is almost all dissolved in
acetone

Almost! It doesn't matter how much is dissolved. There is free acetylen
in the bottle with at least 116psi. Those 116psi depending on the
temperature and thus of the dissolving ability of the acetone.

There is another reason why the ballons explode. I think it is
UV-radiation.

Acetylen _is_ sensitive. No doubt about that.


Nick
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