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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.

Barium [7440-39-3], soluble compounds  

French name in the regulation: Baryum [7440-39-3], composés solubles
CAS : 7440-39-3

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)
ppm mg/m3 f/cc Notes
TWAEV - 0,5 - -
STEV - - - -
Ceiling - - - -
Carcinogenicity Sensitizer
Simple asphyxiantPercutaneous
Prohibited useProhibited recirculation
Minimum exposureExplosion hazard
Ototoxic

TWA adjustment for unusual work schedules

II : Daily adjustment

CNESST – Toxicological Index Service

Consult REPTOX file: Barium [7440-39-3], soluble compounds

Analysis:

Baryum, composés solubles (exprimé en Ba)

Method: IRSST - 374

Sampling protocol

Sampling device:
Sampling media required:
#IRSSTDescription
903 PVC filter, 37 mm, 5 µm

Parameters:
Flow rate: 1,5 L/min
TWA sampling volume: 180 L
STEL sampling volume: -
Remarks: Specific sampling must be carried out for this substance.

Principle: Inductively coupled plasma spectrometry (ICP-MS)
Minimum reported value: 5 µg
Remarks: This method allows the analysis of chemical elements present in the sample without distinguishing the different chemical forms. The analytical results are expressed as total soluble barium.

IRSST. "Détermination des composés solubles dans l'air par ICP-MS". Méthode 374. Non publiée.