1,3-Butadiene

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.

1,3-Butadiene

French name in the regulation: Butadiène-1,3

CAS : 106-99-0

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)

	ppm	mg/m³	f/cc	Notes
TWAEV	2	4,4	-	-
STEV	-	-	-	-
Ceiling	-	-	-	-

Carcinogenicity	C2	Sensitizer
Simple asphyxiant		Percutaneous
Prohibited use		Prohibited recirculation
Minimum exposure		Explosion hazard
Ototoxic

TWA adjustment for unusual work schedules

III : Weekly adjustment

CNESST – Toxicological Index Service

Consult REPTOX file: 1,3-Butadiene

Analysis:

Butadiène-1,3

Method: IRSST - 171-1

Sampling protocol

Sampling device:
Sampling media required:

#IRSST	Description
2189	Activated charcoal with TBC

Parameters:
Flow rate: Max: 0,075 L/min
TWA sampling volume: 10 L
STEL sampling volume: -
Remarks: 1,3-Butadiene must be sampled specifically due to the sampling device used. This method cannot be used if there is presence of a mixture of C3 to C5 hydrocarbons because of chromatographic interferences. An alternative method is available. Please contact the IRSST prior to sampling.

Analytical protocol

Principle: Gas chromatography with flame ionization detection (GC-FID)
Minimum reported value: 4,4 µg

Reference

IRSST. "Analyse du butadiène-1,3". Méthode 171-1. IRSST, 1995.