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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.

Propylene glycol monomethyl ether  

French name in the regulation: Éther monométhylique de propylène glycol
CAS : 107-98-2
Synonyms: Méthoxy-1 propanol-2

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)
ppm mg/m3 f/cc Notes
TWAEV 50 184* - -
STEV 100 369* - -
Ceiling - - - -
Carcinogenicity Sensitizer
Simple asphyxiantPercutaneous
Prohibited useProhibited recirculation
Minimum exposureExplosion hazard
Ototoxic

TWA adjustment for unusual work schedules

IV : Daily or weekly adjustment ( the more stringent of the two)

CNESST – Toxicological Index Service

Consult REPTOX file: Propylene glycol monomethyl ether

Analysis:

Éther monométhylique de propylène glycol

Method: IRSST - 334

Sampling protocol

Sampling device:
Sampling media required:
#IRSSTDescription
2120 Activated charcoal tube 100/50 mg

Parameters:
Flow rate: 0,2 L/min
TWA sampling volume: 10 L
STEL sampling volume: -
Remarks: The analysis of Propylene Glycol Monomethyl Ether (CAS 107-98-2) must be sampled specifically due to a specific desorption solvent.

Principle: Gas chromatography with flame ionization detection (GC-FID)
Precision (%): 4.2
Minimum reported value: 100 µg
Remarks: However, the simultaneous sampling and analysis of Ethylene Glycol Monobutyl Ether Acetate (CAS 112-07-2), Butoxy 2-ethanol (CAS 111-76-2), Ethylene Glycol Ether diethylene glycol and monobutyl (CAS 112-34-5), ethylene glycol monomethyl ether (CAS 109-86-4), 2-Methoxyethyl acetate (EGMEA) (110-49-6) and Ethylene glycol monoethyl ether (CAS 110-80-5) are possible.

IRSST. "Analyse du 1-méthoxy-2-propanol". Méthode 334. Méthode non publiée.
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.