Join Date: May 2002
Location: East Coast
Thanked 3 Times in 3 Posts
Rep Power: 16
Wild...I don't know if it is "toxic" in the strict sense of the word. To the extent that it displaces oxygen in an enclosed environment...it can still kill you from lack of oxygen.
It is commonly used to carbonate beverages and in the manufacturing of 'dry' ice and fire extinguishers. Why is it dangerous?
Because carbon dioxide displaces oxygen, it is a health risk since we need oxygen to live. CO2 is an asphyxiant. It can cause headaches, drowsiness and loss of ability to maintain concentration. Hence the government standards,,,,
How much is safe in the home?
The Federal Standard for carbon dioxide limits of exposure in air is 5,000 ppm (parts per million). This exposure limit is for a healthy adult. Consideration should be given for children, people over 65, and people with specific health conditions. A guideline set forth by the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) for schools, offices, and areas where people spend extended periods of time indoors is 1000 ppm. As a comparison, it is not unusual that outdoor air has a concentration of carbon dioxide in the range of 300 to 400ppm. Metropolitan areas usually have higher outdoor air concentrations of carbon dioxide than rural areas.