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April 20, 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.

Strontium chromate

French name in the regulation: Chromate de strontium
CAS : 7789-06-2

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)
ppm mg/m3 f/cc Notes
TWAEV - 0,0005 - -
STEV - - - -
Ceiling - - - -
Simple asphyxiant Percutaneous
Minimum exposure Sensitizer
Prohibited use Prohibited recirculation
Carcinogenicity C2

TWA adjustment for unusual work schedules

III : Weekly adjustment

CNESST – Toxicological Index Service

Consult REPTOX file: Strontium chromate

Analysis:

Chromate de strontium

Method: IRSST - 365

Sampling device:
Sampling media required:
#IRSSTDescription
976 25mm quartz filter in a conical cassette

Parameters:
Flow rate: 1.5 to 4 L/min
TWA sampling volume: 360 L
STEL sampling volume: -

Principle: Ion chromatography with visible detection (IC-VIS)
Minimum reported value: 0,04 µg
Remarks: The analytical results are expressed as total water-soluble and water-insoluble chromium VI, see these substances' datasheets for the CVa. See the Info-Labo 2014-06 to compare to the regulation. Surface tests for chromates can be carried out, and the required equipment (kit #2625) is available at the IRSST. Extraction delay of 8 days for welding fumes and 10 days for the other processes following the sampling date. Ship all samples by rapid courier within a period not exceeding 24 hours after sampling.

IRSST. Détermination des composés inorganiques du chrome hexavalent hydrosolubles et hydroinsolubles dans l'air des lieux de travail, Méthodes analytiques, méthode 365, Montréal, IRSST, 2009, 17 pages.
Following the amendment of Appendix 1 of the Quebec Regulation respecting occupational health and safety (RSST, RLRQ, c. S-2.1, r. 13), part of Quebec Occupational Health and Safety Act, which came into effect on March 26, 2020, the TWAEV, STEL and Ceiling values for certain substances are now expressed in ppm. For these substances, the IRSST performed the conversion calculations to express these TWAEV, TWA and Ceiling values in mg/m3, which thus appears in its Sampling Guide for Air Contaminants in the Workplace (Guide d'échantillonnage des contaminants de l'air en milieu de travail ) and the associated Substance Data Sheets. However, it is imperative to refer to the values expressed in the RSST which are legally binding.