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IRSST - Institut de recherche Robert-Sauvé en santé et en sécurité du travail
OHS Research
Research at the IRSST
Reference Framework
Scientists Directory
Publications and Tools
IRSST's Production
Magazine and Newsletter
Scientific Watch
Documentation Center
Useful Links
Laboratory Services
Laboratories
Analysis and Testing Services
Laboratory Methods
Masks Efficacy Evaluation
Workplace Air Contaminants
Slip Resistance Test for Protective Footwear
Loan, Calibration and Repairs
Recognition Programs
CQ Fibres
Quality Control of Fiber Counts
CQ Vrac
Recognized Laboratories
Interlaboratory quality
control program
Guides and Tools
Instruments and Sampling Material
Register
Research Fund and Partnerships
Research Fund and Partnerships
Grants
Scholarships
Master’s Scholarship and Supplement
Doctoral Scholarship and Supplement
Postdoctoral Fellowship
Research partnerships
Institute
About
Activity Report
Organization Chart
Policies
Research Ethics Committee
Strategic Plan
Historical Overview
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substance
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substance
April 15, 2026
Uranium (natural), soluble and insoluble compounds (as U)
French name in the regulation:
Uranium naturel, Composés solubles et insolubles
CAS :
7440-61-1
Exposure Standards in RROHS regulation
Permissible exposure values (PEV)
ppm
mg/m
3
f/cc
Notes
TWAEV
-
0,2
-
-
STEV
-
0,6
-
-
Ceiling
-
-
-
-
Carcinogenicity
C1
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:
Uranium (natural), soluble and insoluble compounds (as U)
Analysis:
Uranium naturel, Composés solubles (exprimé en U)
Recommended method by the IRSST:
Method: OSHA - ID125G
Sampling protocol
Sampling device:
Mixed cellulose ester filter
Parameters:
Flow rate: 2 L/min
TWA sampling volume: 240 L
STEL sampling volume: -
Remarks:
This substance is not analyzed by our laboratories. It might be possible that the analysis is performed by another laboratory. Please contact the IRSST before sampling.
Analytical protocol
Principle:
Inductively coupled plasma-optical emission spectrometer (ICP-OES)
Reference
OSHA Analytical Methods Manual, Method ID125G.: Metal particulates in workplace atmospheres (ICP analysis), 2002.
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