Carbon Dioxide (CO2)
What is Carbon Dioxide?
- Carbon dioxide is colorless. At low concentrations, the gas is odorless. At higher concentrations it has a sharp, acidic odor.
- Possible exposure can come from combustible engine exhaust (i.e. diesel fumes) and controlled burning operations.
Controlled burning produces carbon dioxide.
Health Risks of Carbon Dioxide
- CO2 is an asphyxiant and an irritant.
- When inhaled, it can produce a sour taste in the mouth and a stinging sensation in the nose and throat.
Occupational Exposure Limits
Amounts above 5,000 ppm are considered very unhealthy, and those above about 50,000 ppm (equal to 5% by volume) are considered dangerous.
Knowledge Check Choose the best answer for the question.
4-3. At what level of exposure to carbon dioxide does it become dangerous for oil spill cleanup workers?
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