Jim,

Dry ice bombs are not flammable bombs. To the contrary, I would rather consider them as having good extinguishing capabilities. Dry ice is carbon dioxide that has been cooled down to about -80ºC and it has thus undergone deposition. Dry ice does not melt, it sublimes, i.e. the solid converts directly to a gas: it is the white smoke that you can see when you expose dry ice to the air.

Basically, you place some dry ice in the container, add a little bit of water, and close the lid. Dry ice sublimes into gaseous carbon dioxide, thus increasing the pressure in the vessel (bottle), until this one can no longer resist the pressure and ruptures. It is purely a mechanical explosion. There are no chemical reactions involved in dry ice bombd, only physical ones.

Upon rupture, the vessel releases gaseous carbon dioxide, remnants of dry ice, and water droplets.... all components useful to extinguish a fire.

While this is a stupid game (one must be extremely rapid in closing the lid of the bottle and throwing it away, otherwise it may explode in your hands), it is certainly not an incendiary device.

Hope this helps,

Regards,

Eric Stauffer