OXYGEN

Chemical Identification
Chemical Identification
CAS # 7782-44-7
Formula
 

O₂

Synonyms
 

 

Physical Properties
Physical Properties
Physical description Colorless, odorless and tasteless gas.
Boiling point -297.3°F Molecular weight 32
Freezing point/melting point -361°F Vapor pressure
Flash point Vapor density
Specific gravity 1.14 at -297.4°F 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.)
Sampling group
Sampler/Sampling media
Sampling time*
Sampling volume (TWA)*
Sampling flow rate (TWA)*
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments
Method reference
Notes
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 Detector tube Detector tube Detector tube Detector tube Detector tube CMS Chip
Model/Type Dräger - Oxygen 5%/B, 6728081 Dräger - Oxygen 5%/C, 8103261 Gastec 31B Matheson-Kitagawa 8014-159SA Matheson-Kitagawa 8014-159SB, 8014-159SC Oxygen, 1-30 Vol% range
Sampling information
(see manufacturer instructions)
1 stroke, approx 2%-23% range, uncertainty approx 16% 1 stroke, approx 2-23% range, uncertainty approx 16% 0.5 or 1 stroke, 2-24% range, uncertainty 6-24% 0.5 stroke, approx 2-24% range 8014-159SB: 0.5 stroke, approx 2-24% range. 8014-159SC: 0.5 or 1 stroke, approx 1-24% range
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
 

 

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:
 

Not established

Notes:
 

Not established

Notes:
 

Not established

Notes:
 

Not established

Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: 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 - Oxygen

NIOSH: Pocket Guide to Chemical Hazards - Not listed

Literature References

 
  • Pohanish, R.P. (editor): Oxygen. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 1771-1772.

Last Updated Date : 01/07/2021