Asphalt fumes [particulates and vapour, as benzene solubles or their equivalent] (Pt)

French name in the regulation: Asphalte, fumées d' [particules et vapeur exprimées en fraction soluble dans le benzène ou son équivalent] (Pt)

CAS : 8052-42-4

Synonyms: Pétrole, bitumes de

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)

	ppm	mg/m³	f/cc	Notes
TWAEV	-	1,5	-	Pt
STEV	-	-	-	-
Ceiling	-	-	-	-

Carcinogenicity		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: Asphalt fumes [particulates and vapour, as benzene solubles or their equivalent](Pt)

Analysis:

Total Organic Matter (particles and vapor)

Method: IRSST - 381

Sampling protocol

Sampling device:
Sampling media required:

#IRSST	Description
937	PTFE filter, 37 mm, 1 µm, preweighed, with Orbo 42L tube

Parameters:
Flow rate: 1 L/min
TWA sampling volume: 250 L
STEL sampling volume: -
Remarks: IRSST Method 381 uses a sampling train consisting of a cassette designed to capture particles, followed by a tube that adsorbs vapors. This tube is directly connected to the pump using a Tygon hose. The gravimetric analysis of the filter provides a result that can be used for monitoring purposes or for statistical analyses. However, this result is not comparable to the standard. The results obtained are expressed as total organic matter, based on calibration performed with hexadecane (C16). A multiplicative factor of 1.14 is applied to the vapor-related results (see InfoLABO 2026-03). This method is based on the MetroPol « Bitumen Fumes » M-2 method from INRS (France), 2016 edition.

Analytical protocol

Principle: Gas chromatography with flame ionization detection (GC-FID)
Remarks: The minimum reported value (MRV) is 12 µg for the vapor fraction and 20 µg for the aerosol fraction. The analytical uncertainty (CVa) is 3,6% for the vapor fraction and 1,8% for the aerosol fraction. The analysis results are expressed as total organic matter.

Reference

IRSST. "Détermination de la concentration des fumées d'asphalte (particules et vapeur) dans l'air par GC-FID ". Méthode 381. Non publiée.

IRSST - Institut de recherche Robert-Sauvé en santé et en sécurité du travail

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