Air Contaminants - Exposure Limits
Exposure limits for various air contaminants.
Limits for various air contaminants:
Pollutant | Permissible Exposure Limit (PEL)1) |
---|---|
Acetaldehyde | 200 ppm |
Acetic Acid | 10 ppm |
Acetone | 1000 ppm |
Ammonia | 50 ppm |
Asbestos 2) | 0.1 fiber/cubic centimeter |
Benzene 2) | 1 ppm |
Bromine | 0.1 ppm |
Cadmium 3) | 5 μg/m3 |
Carbon dioxide | 5000 ppm (1000 ppm 8 hrs ASHRAE) |
Carbon disulfide | 200 ppm |
Carbon monoxide | 50 ppm (9 ppm 8 hrs, 35 ppm 1 hr ASHRAE) |
Carbon tetrachloride 3) | 10 ppm |
Chlorine | 1 ppm 4) |
Chloroform | 50 ppm 4) |
Cresol | 5 ppm |
Ethanol (Ethyl alcohol) | 1000 ppm |
Ethyl chloride | 1000 ppm |
Fluorine | 0.1 ppm |
Formaldehyde 3) | 0.75 ppm |
Gasoline | 300 ppm |
Hydrogen cyanide | 10 ppm |
Iodine | 0.1 ppm 4) |
Iron oxide (fume) | 10 mg/m3 |
Isopropyl alcohol | 400 ppm |
Lead | 50 μg/m3 |
Manganese compounds | 5 mg/m3 |
Mercury | 1 mg/10 m3 4) |
Methanol (Methyl alcohol) | 200 ppm |
Nitric oxide | 25 ppm |
Nitrogen dioxide | 5 ppm 4)(0.05 ppm 1 year ASHRAE) |
Ozone | 0.05 ppm (0.12 ppm 1 hr ASHRAE) |
Particles | 50 μg/m3 1 year, 150 μg/m3 24 hrs ASHRAE |
Propane 5) | 1000 ppm |
Selenium compounds | 0.2 mg/m3 |
Sulfur dioxide | 5 ppm (0.03 ppm 1 year, 0.14 ppm 24 hrs ASHRAE) |
Sulfur acid | 1 mg/m3 |
Tellurium compounds | 0.1 mg/m3 |
Tetraethyl lead | 0.075 mg/m3 |
Toluene | 200 ppm |
Turpentine | 100 ppm |
Vinyl chloride 2) | 1 ppm |
Zinc oxide, fume | 5 mg/m3 |
Zinc oxide, dust | 15 mg/m3 |
1) PEL -Permissible Exposure Limit - 8-hour time weighted averages - An employee's exposure to any substance listed, in any 8-hour work shift of a 40-hour work week, shall not exceed the 8-hour time weighted average limit given for that substance - OSHA, Occupational Safety & Health Administration
2) Human carcinogen - confirmed
3) Human carcinogen - suspected
4) Acceptable ceiling concentration
5) Simple asphyxiant