Description
Dry ice is solid carbon dioxide that sublimates from solid to gas instead of to a liquid, this is why it is called “dry”. It is much colder than normal ice made of solid H2O, which makes it dangerous for human bodies – It should not be consumed or swallowed and could cause frostbite if it touches exposed flesh.
Normal air is .035% Carbon Dioxide. If the atmospheric concentration rises above .5% it can become dangerous. Small concentrations of CO2 can cause quicker breathing, headaches, and sleepiness in some, but are otherwise not harmful. Immediately exit areas containing dry ice if you develop a headache or your fingernails or lips start to turn blue. These are signs of CO2 overexposure. CO2 is heavier than air and will accumulate in lower spaces. Always provide adequate ventilation and monitor for shortness of breath and dizziness. A CO2 monitor is recommended.
