Dry ice bomb

A dry ice bomb is a simple bomb-like device. While its simplicity, ease of construction, high bursting pressure and sound make it appealing for recreational purposes, it can be unpredictable and dangerous, and it has led to many injuries. Dry ice bombs are illegal in many jurisdictions.

Dry ice bombs are commonly made from a container such as a plastic bottle, water and dry ice. The bottle is filled about one quarter full of water. Chunks of dry ice are added and the container is shut tightly. As the solid carbon dioxide warms, it sublimates to a gas. With limited room for the gas to expand, the pressure in the bottle increases. Bombs typically rupture within 30 seconds to 30 minutes, dependent largely on the temperature of the air outside the bottle. A dry ice bomb may develop frost on its exterior prior to explosion. After explosion, it appears to have shattered, with the overall shape of the device intact.

Dry ice bombs have some serious risks:

Injuries are common, with glass bottles in particular posing risks of serious injury or death.

Bombs that fail to explode pose a major safety problem: They cannot be left, yet cannot be safely approached.

Dry ice bombs are illegal in many jurisdictions, and can lead to imprisonment.

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