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OHS Research
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Magazine and Newsletter
Scientific Watch
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Slip Resistance Test for Protective Footwear
Loan, Calibration and Repairs
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Interlaboratory quality
control program
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substance
September 15, 2025
N-Nitrosodimethylamine
French name in the regulation:
N-Nitrosodiméthylamine
CAS :
62-75-9
Exposure Standards in RROHS regulation
Permissible exposure values (PEV)
ppm
mg/m
3
f/cc
Notes
TWAEV
-
-
-
-
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:
N-Nitrosodimethylamine
Analysis:
N-Nitrosodiméthylamine (NDMA)
Method: IRSST - 371
Sampling protocol
Sampling device:
Sampling media required:
#IRSST
Description
2210
Florisil tube with pre-tube
Parameters:
Flow rate: 1-2 L/min
TWA sampling volume: 1000 L
STEL sampling volume: -
Remarks:
The recommended sampling volume is 400 to 1000 litres. The samples can be kept for 4 weeks in the dark at 4°C.The simulltaneous determination of 8 nitrosamines can be done on the same tube.
Analytical protocol
Principle:
Gas chromatography with nitrogen-phosphorus detection (GC-NPD)
Precision (%):
3,3
Minimum reported value:
0,04 µg
Reference
IRSST. "Analyse des nitrosamines dans l'air". Méthode 371. Non publiée.
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