Nitric acid, Inhalable fraction and vapour
CAS Number
7697-37-2
Last Revised
2026
TWA Limit
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STEL
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Ceiling Limit
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Notes & Notations
- ACGIH (IFV) - Inhalable Fraction & Vapour
- No British Columbia exposure limit at this time. Check if this substance has other exposure limits or designations / health hazard notations.
Synonyms:
Aqua fortis; Azotic acid
;HNO3
IDLH:
25 ppm
(Source: NIOSH)
If the substance you are searching has an entry that contains a size-selective fraction, form, or work activity, you should perform an additional search to confirm if other exposure limits may apply.
Ensure no workers are exposed to a substance that exceeds the exposure limits in accordance with OHSR 5.48.
Ensure no workers are exposed to a substance that exceeds the exposure limits in accordance with OHSR 5.48.