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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.

Chromium (metal)

French name in the regulation: Chrome, métal
CAS : 7440-47-3

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)
ppm mg/m3 f/cc Notes
TWAEV - 0,5 - -
STEV - - - -
Ceiling - - - -
Simple asphyxiant Percutaneous
Minimum exposure Sensitizer
Prohibited use Prohibited recirculation
Carcinogenicity

TWA adjustment for unusual work schedules

III : Weekly adjustment

CNESST – Toxicological Index Service

Consult REPTOX file: Chromium (metal)

Analysis:

Chrome (exprimé en Cr)

Method: IRSST - 362

Sampling device:
Sampling media required:
#IRSSTDescription
913 MCE filter, 37 mm, 0,8µm, preweighed

Parameters:
Flow rate: 1.5 L/min
TWA sampling volume: 180 L
STEL sampling volume: -
Remarks: Refer to the information in InfoLABO 2018-11 regarding limitations related to gravimetric measurement obtained through the use of these cassette. A surface wipe sampling is available. For more information, please contact the IRSST.

Principle: Inductively coupled plasma spectrometry (ICP-MS)
Precision (%): 2,9
Minimum reported value: 1 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 chromium.

IRSST, Détermination de métaux dans l'air des lieux de travail par spectrométrie de masse avec plasma à couplage inductif (ICP-MS), Méthodes analytiques, / MA-362-fr, Montréal, IRSST, 2010, 17 pages.

Chrome (exprimé en Cr)

Method: IRSST - 362

Sampling device:
Sampling media required:
#IRSSTDescription
916 MCE filter, 25 mm, 0.8µm, preweighed

Parameters:
Flow rate: 1.5 L/min
TWA sampling volume: 180 L
STEL sampling volume: -
Remarks: Refer to the information in InfoLABO 2018-11 regarding limitations related to gravimetric measurement obtained through the use of these cassette. A surface wipe sampling is available. For more information, please contact the IRSST.

Principle: Inductively coupled plasma spectrometry (ICP-MS)
Precision (%): 2,9
Minimum reported value: 1 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 chromium.

IRSST, Détermination de métaux dans l'air des lieux de travail par spectrométrie de masse avec plasma à couplage inductif (ICP-MS), Méthodes analytiques, / MA-362-fr, Montréal, IRSST, 2010, 17 pages.

Chrome Solu-Sert

Method: IRSST - 394

Sampling device:
Sampling media required:
#IRSSTDescription
990 25-mm Solu-Sert MCE filter

Parameters:
Flow rate: 1.5 L/min
TWA sampling volume: 180 L
STEL sampling volume: -
Remarks: A surface wipe sampling is available. For more information, please contact the IRSST.

Principle: Inductively coupled plasma spectrometry (ICP-MS)
Precision (%): 4,9
Minimum reported value: 1 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 chormium.

IRSST. Détermination de la concentration des métaux dans l’air par ICP-MS – Prélèvement effectué sur filtre encapsulé digérable Solu Sert.

Chrome Solu-Sert

Method: IRSST - 394

Sampling device:
Sampling media required:
#IRSSTDescription
992 37-mm Solu-Sert MCE filter

Parameters:
Flow rate: 1.5 L/min
TWA sampling volume: 180 L
STEL sampling volume: -
Remarks: A surface wipe sampling is available. For more information, please contact the IRSST.

Principle: Inductively coupled plasma spectrometry (ICP-MS)
Precision (%): 4,9
Minimum reported value: 1 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 chormium.

IRSST. Détermination de la concentration des métaux dans l’air par ICP-MS – Prélèvement effectué sur filtre encapsulé digérable Solu Sert.
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.