Originally Posted by Mermaid4
Actually, oxygen is NOT explosive..That is a misleading thing for most people. Oxygen is only flammable when used in conjunction with other flammable gasses, otherwise the air we breathe would be constantly exploiding....Since I am aware of that fact and we have no other flammable gasses flowing through that particular line, I ( formerly Mother/BabyRN), actually have no problem blowing up the little donut with it....Thanks for the concern, however.
While oxygen itself doesn't burn, it supports combustion of other flammable substances--not just gasses.
Air, which is mostly nitrogen, doesn't support combustion as vigorously, since it has less O2. But in the presence of pure O2, many substances are highly combustible--like the tubing which carries it to a nasal cannula, or Velcro, which was the major fuel in the Apollo 1 disaster. On the other hand, even a highly flammable mixture of oxygen and hydrogen won't burn until exposed to sufficient heat, like a spark of static electricity.
The one saving grace with O2 in a donut, or a glove to make a toy, is that there just isn't much of it. Ignited, the object would burn up very quickly, but with a lot of heat. It wouldn't "explode", but it would do so damage to anyone sitting on it, and possibly ignite bedding and/or a small amount of flesh. Well, the other saving grace is that the ignition temperature would be fairly high. Smoking on an O2 donut would be very bad, but static probably wouldn't do it.
But any fire marshal in the country would have your ears over this one.