IRSST - Institut de recherche Robert-Sauvé en santé et en sécurité du travail

substance

Laboratory Services   >   Analysis and Testing Services   >   Workplace Air Contaminants   >   substance
November 24, 2024

According to Decree 280-2024 published on February 28, 2024, in the Gazette officielle du Québec, the amendment to the Appendix 1 of the Regulation respecting occupational health and safety (RSST, RLRQ, c. S-2.1, r. 13) will come into force on March 14, 2024. These regulatory changes have not yet been incorporated into the current Substance Data Sheets of the Sampling Guide for Air Contaminants in the Workplace. An update is currently underway and will be available as soon as possible. Consequently, the information contained in the data sheets of substances modified or added in Decree 280-2024 is partially inaccurate or incomplete. Please consult our infoLABO (in French only) for more details. Please contact our client service: [email protected] for further information.

Sodium azide, sodium azide  

French name in the regulation: Sodium, azoture de, en azoture de sodium
CAS : 26628-22-8

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)
ppm mg/m3 f/cc Notes
TWAEV - - - -
STEV - - - -
Ceiling - 0,29 - -
Carcinogenicity Sensitizer
Simple asphyxiantPercutaneous
Prohibited useProhibited recirculation
Minimum exposureExplosion hazard
Ototoxic

TWA adjustment for unusual work schedules

1A : No adjustment

CNESST – Toxicological Index Service

Consult REPTOX file: Sodium azide, sodium azide

Analysis:

Sodium, azoture de, en azoture de sodium

Recommended method by the IRSST:
Method: OSHA - ID211

Sampling protocol

Sampling device: Polyvinyl chloride filter in series with a silica gel tube 150/75 mg.
Parameters:
Flow rate: 1 L/min
TWA sampling volume: 5 L
STEL sampling volume: -
Remarks: This substance is not analyzed by our laboratories. It might be possible that the analysis be performed by another laboratory. Please contact the IRSST before sampling.

Principle: Ion chromatography with visible detection (IC-VIS)
Remarks: OSHA method ID211 is for the simultaneous determination of sodium azide (NaN3) and hydrazoic acid (HN3) since sodium azide is converted into hydrazoic acid when in contact with moisture.

OSHA Analytical Methods Manual. Method ID211: Sodium azide and hydrazoic acid in workplace atmospheres, 1992.