OZONE†

Chemical Identification
Chemical Identification
CAS # 10028-15-6
Formula

O₃

Synonyms

triatomic oxygen

Physical Properties
Physical Properties
Physical description Colorless to blue gas with a very pungent odor.
Boiling point -169°F Molecular weight 48.0
Freezing point/melting point -315°F Vapor pressure >1 atm
Flash point Vapor density 1.66
Specific gravity 1.614 at -319.7°F Ionization potential 12.52 eV
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.) 1980
Sampling group
Sampler/Sampling media Nitrite impregnated GFF - Ozone Sampling Filters and Cassettes [SLTC101]
Sampling time*

180 min at 0.5 L/min or up to 480 min when using the lower flow rate at 0.25 L/min 

Sampling volume (TWA)*

90-120 L

Sampling flow rate (TWA)*

0.25-0.5 L/min

Sampling volume (STEL/Peak/C)*

22.5 L

Sampling flow rate (STEL/Peak/C)*

1.5 L/min

Analytical method instruments IC
Method reference OSHA ID-214 (fully validated)
Notes

Sulfur dioxide (SO₂) is a sampling interference, and oxidizer tubes must be used if SO₂ is suspected to be present; contact the SLTC at (801) 233-4900.

Special requirements

These media are prepared by SLTC as needed and are not available for immediate shipment. Please allow time for SLTC to prepare these media prior to sampling.

* 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 CMS Chip
Model/Type Ozone, 25-1000 ppb range
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

0.1 ppm (0.2 mg/m³)

REL-TWA TLV-TWA

Heavy work: 0.05 ppm (0.10 mg/m³), Moderate work: 0.08 ppm (0.16 mg/m³), Light work: 0.10 ppm (0.20 mg/m³) [1995]

PEL-TWA

0.10 ppm (0.20 mg/m³)

PEL-STEL REL-STEL TLV-STEL PEL-STEL

0.30 ppm (0.60 mg/m³)

PEL-C REL-C

0.1 ppm (0.2 mg/m³)

TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes: Notes:

Heavy, moderate, or light workloads: (≥2 hours): 0.20 ppm (0.39 mg/m³) [1995]

Notes:
Health factors:  See NIH-NLM PubChem. IDLH

5 ppm

Carcinogenic classifications: TLV-A4 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 - Ozone

NIOSH: Pocket Guide to Chemical Hazards - Ozone

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Ozone. See annual publication for most recent information.
  • Anderson, W., Prescott, G.J., Packham, S., Mullins, J., Brookes, M. and Seaton, A.: Asthma admissions and thunderstorms: a study of pollen, fungal spores, rainfall, and ozone. QJM 94(8): 429-433, 2001.
  • NIOSH: Occupational Health Guideline for Ozone. September 1978.
  • Olin, A.C., Andersson, E., Andersson, M., Granung, G., Hagberg, S. and Toren, K.: Prevalence of asthma and exhaled nitric oxide are increased in bleachery workers exposed to ozone. Eur. Respir. J. 23(1): 87-92, 2004.

Last Updated Date : 08/04/2022