1. OSHA Occupational Chemical Database
  2. RADON
Label abbreviations descriptions

RADON‡

Chemical Identification
Chemical Identification
CAS # 10043-92-2
Formula
 

Rn
Synonyms
 

radon gas; alphatron; niton; radium emanation
Physical Properties
Physical Properties
Physical description Colorless, odorless gas.
Boiling point -79.1°F Molecular weight 222.02
Freezing point/melting point -95.8°F Vapor pressure
Flash point Vapor density
Specific gravity Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) R100
Sampling group
Sampler/Sampling media EPERM
Sampling time*
 

≥10 days
Sampling volume (TWA)*
 

 
Sampling flow rate (TWA)*
 

 
Sampling volume (STEL/Peak/C)*
 

 
Sampling flow rate (STEL/Peak/C)*
 

 
Analytical method instruments
Method reference OSHA ID-208 (partially validated)
Notes
 

OSHA staff please contact the SLTC prior to sampling.
Special requirements
 

 

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
 

 
Bulk Method
Bulk Method
 

 
On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA
 

100 pCi/L (This is the limit that a worker (over 18 years of age) can be exposed to in 40 hours in a consecutive 7 day period.)

 REL-TWA
 

 

 TLV-TWA
 

 

 PEL-TWA
 

 
PEL-STEL
 

 

 REL-STEL
 

 

 TLV-STEL
 

 

 PEL-STEL
 

 
PEL-C
 

 

 REL-C
 

 

 TLV-C
 

 

 PEL-C
 

 
Skin notation
 

NA

 Skin notation
 

NA

 Skin notation
 

NA

 Skin notation
 

NA
Notes:
 

See 29 CFR 1910.1096(c)(1).

 Notes:
 

Not established

 Notes:
 

Not established

 Notes:
 

Not established
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: IARC-1, NTP Notes:
 

 
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Not listed

NIOSH: Pocket Guide to Chemical Hazards - Not listed

Literature References

 
  • International Chemical Safety Cards (WHO/IPCS/ILO): Radon.
  • EPA Air Toxics Website: Radionuclides (including Radon, Radium and Uranium). U.S. Environmental Protection Agency Technology Transfer Network.
  • U.S. Department of Justice: Radiation Exposure Compensation Program: About the Program (June 7, 2004) 5 pp.
  • Archer, V.E., Coons, T. Saccomanno, G. and Hong, D.Y.: Latency and the lung cancer epidemic among United States uranium miners. Health Phys. 87 (5): 480-489, 2004.
  • Archer, V.E., Renzetti, A.D., Doggett, R.S., Jarvis, J.Q. and Colby, T.V.: Chronic diffuse interstitial fibrosis of the lung in uranium miners. J. Occup. Environ. Med. 40 (5): 460-474, 1998.
  • Frumkin, H. and Samet, J.M.: Radon. CA Cancer J. Clin. 51 (6): 337-344, 2001.

Last Updated Date : 01/11/2021