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OHS Research
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Loan, Calibration and Repairs
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substance
September 04, 2025
Hexane (other isomers)
French name in the regulation:
Hexane (autres isomères)
Exposure Standards in RROHS regulation
Permissible exposure values (PEV)
ppm
mg/m
3
f/cc
Notes
TWAEV
500
1760
-
-
STEV
1000
3500
-
-
Ceiling
-
-
-
-
Carcinogenicity
Sensitizer
Simple asphyxiant
Percutaneous
Prohibited use
Prohibited recirculation
Minimum exposure
Explosion hazard
Ototoxic
TWA adjustment for unusual work schedules
1C
: No adjustment
CNESST – Toxicological Index Service
Consult REPTOX file:
Hexane (other isomers)
Analysis:
Hexane (other isomers)
Method: IRSST - 409
Sampling protocol
Sampling device:
Sampling media required:
#IRSST
Description
2120
Activated charcoal tube 100/50 mg
Parameters:
Flow rate: 0,2 L/min
TWA sampling volume: 4 L
STEL sampling volume: -
Analytical protocol
Principle:
Gas chromatography with flame ionization detection (GC-FID)
Precision (%):
1,5
Minimum reported value:
150 µg
Remarks:
This method allows analysis of the following isomers: 2,3-Dimethylbutane (CAS: 79-29-8); 3-Methylpentane (CAS: 96-14-0) and 2-Methylpentane (CAS: 107-83-5). The following isomer was not analyzed: 2,2-Dimethylbutane (CAS: 75-83-2).
Reference
IRSST. "Détermination des isomères de l'hexanes autre que l'hexane normal dans l'air". Méthode 409. Non publiée.
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