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Label abbreviations descriptions

NITRIC OXIDE (NO)

Chemical Identification
CAS # 10102-43-9
Formula

NO
Synonyms

Physical Properties
Physical description
Boiling point Molecular weight
Freezing point/melting point 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
Analyte code (IMIS no.) 1029
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 OSHA 1029 (fully validated)
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.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)

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 Skin notation Skin notation Skin notation
Notes: Notes: Notes: Notes:
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

Last Updated Date : 02/13/2026

Common Respiratory Illnesses including Influenza, COVID-19, and RSV

Common Respiratory Illnesses including Influenza, COVID-19, and RSV

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General Recommendations

Required Use: When respirators are required by an OSHA standard or by the employer, the employer must be in full compliance with all applicable sections of OSHA's Respiratory Protection Standard (

Common Respiratory Illnesses including Influenza, COVID-19, and RSV

Standards

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Under the Occupational Safety and Health Act of 1970, 29 U.S.C. § 651 et seq. (the OSH Act), OSHA’s statutory mission is to ensure safe and healthful working conditions for workers by setting and enforcing standards and by providing training, outreach, education, and assistance.

Common Respiratory Illnesses including Influenza, COVID-19, and RSV

Common Respiratory Illnesses including Influenza, COVID-19, and RSV

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COVID-19

Quick Facts about COVID-19

Common Respiratory Illnesses including Influenza, COVID-19, and RSV

Common Respiratory Illnesses including Influenza, COVID-19, and RSV

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Influenza (Flu)

Quick Facts about Flu