NITRIC OXIDE†
CAS # | 10102-43-9 |
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Formula |
NO |
Synonyms |
mononitrogen monoxide; nitrogen monoxide |
Physical description | Colorless gas. | ||
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Boiling point | -241°F | Molecular weight | 30.01 |
Freezing point/melting point | -263°F | Vapor pressure | 34.2 atm |
Flash point | Vapor density | 1.04 | |
Specific gravity | 1.27 at -238.36° | Ionization potential | 9.27 eV |
Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
NFPA health rating | 3 | NFPA fire rating | 0 |
NFPA reactivity rating | 0 | NFPA special instruction | OX: Possesses oxidizing properties |
Vapor hazard ratio (VHR) | |||
Historical exceedance percentage | |||
Target organs |
Analyte code (IMIS no.) | 1890 | ||
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Sampling group | |||
Sampler/Sampling media | Sorbent tubes, 2 molecular sieve (triethanolamine) tubes and 1 oxidizer tube [SKC 226-40A] | ||
Sampling time* | 240 min |
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Sampling volume (TWA)* | 6 L |
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Sampling flow rate (TWA)* | 0.025 L/min |
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Sampling volume (STEL/Peak/C)* |
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Sampling flow rate (STEL/Peak/C)* |
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Analytical method instruments | IC | ||
Method reference | OSHA ID-190 (fully validated) | ||
Notes | Submit as separate sample. Only the back tube can be analyzed for NO. The front is analyzed for NO2 by request. Carefully label tubes before shipping to the SLTC. Do not submit oxidizer tube to the SLTC. |
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Special requirements |
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* 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 Sampler/Sampling media |
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Bulk Method |
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Device | |||||
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Model/Type | |||||
Sampling information (see manufacturer instructions) |
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 |
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PEL-TWA |
25 ppm (30 mg/m³) |
REL-TWA |
25 ppm (30 mg/m³) |
TLV-TWA |
25 ppm [1992] |
PEL-TWA |
25 ppm (30 mg/m³) |
PEL-STEL |
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REL-STEL |
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TLV-STEL |
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PEL-STEL |
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PEL-C |
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REL-C |
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TLV-C |
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PEL-C |
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Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Notes: |
Notes:
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Notes:
BEI® |
Notes:
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Health factors: See NIH-NLM PubChem. | IDLH |
100 ppm |
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Carcinogenic classifications: Not listed |
Notes:
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AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
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Additional Resources and Literature References
NOAA: CAMEO Chemicals - Nitric oxide NIOSH: Pocket Guide to Chemical Hazards - Nitric oxide Literature References
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Last Updated Date : 01/28/2021