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

substance

> > >

September 15, 2025

Methyl acetate

French name in the regulation: Acétate de méthyle

CAS : 79-20-9

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)

	ppm	mg/m³	f/cc	Notes
TWAEV	200	606	-	-
STEV	250	757	-	-
Ceiling	-	-	-	-

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

TWA adjustment for unusual work schedules

II : Daily adjustment

CNESST – Toxicological Index Service

Consult REPTOX file: Methyl acetate

Analysis:

Acétate de méthyle

Method: IRSST - 136-1

Sampling protocol

Sampling device:
Sampling media required:

#IRSST	Description
2120	Activated charcoal tube 100/50 mg

Parameters:
Flow rate: Max: 0,2 L/min
TWA sampling volume: 7 L
STEL sampling volume: 3 L

Principle: Gas chromatography with flame ionization detection (GC-FID)
Minimum reported value: 215 µg
Remarks: The analysis can be done by gas chromatography coupled with mass spectrometry (GC-MS, IRSST method# 369); in this case the analytical uncertainty (Cva) is 6.6%.

Reference

IRSST. "Analyse de l'acétate de méthyle". Méthode 136-1. Non publiée.

Methyl acetate

Method: IRSST - 416

Sampling protocol

Sampling device:
Sampling media required:

#IRSST	Description
2696	566AT passive dosimeter

Parameters:
Flow rate: 0,0103 L/min
TWA sampling volume: -
STEL sampling volume: -
Remarks: For the monitors, the flow must be considered as being a sampling rate.

Analytical protocol

Principle: Gas chromatography with flame ionization detection (GC-FID)
Precision (%): 3,1
Minimum reported value: 30 µg

Reference

IRSST. "Dosage des composés organiques volatils dans l'air par dosimétrie passive". Méthode 416. Non publiée.