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IRSST - Institut de recherche Robert-Sauvé en santé et en sécurité du travail
OHS Research
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Magazine and Newsletter
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Slip Resistance Test for Protective Footwear
Loan, Calibration and Repairs
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Quality Control of Fiber Counts
CQ Vrac
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Interlaboratory quality
control program
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Instruments and Sampling Material
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substance
September 04, 2025
n-Hexane
French name in the regulation:
Hexane normal
CAS :
110-54-3
Exposure Standards in RROHS regulation
Permissible exposure values (PEV)
ppm
mg/m
3
f/cc
Notes
TWAEV
50
176
-
-
STEV
-
-
-
-
Ceiling
-
-
-
-
Carcinogenicity
Sensitizer
Simple asphyxiant
Percutaneous
Prohibited use
Prohibited recirculation
Minimum exposure
Explosion 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:
n-Hexane
Analysis:
Hexane normal
Method: IRSST - 141-2
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: 4 L
STEL sampling volume: -
Analytical protocol
Principle:
Gas chromatography with flame ionization detection (GC-FID)
Precision (%):
3,1
Minimum reported value:
15 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 7.8%.
Reference
IRSST. "Analyse du n-hexane dans l'air". Méthode 141-2. Méthodes analytiques. Montréal: IRSST, 1995.
n-Hexane
Method: IRSST - 416
Sampling protocol
Sampling device:
Sampling media required:
#IRSST
Description
2696
566AT passive dosimeter
Parameters:
Flow rate: 0,00988 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 (%):
3,2
Minimum reported value:
8 µg
Reference
IRSST. "Dosage des composés organiques volatils dans l'air par dosimétrie passive". Méthode 416. Non publiée.
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