Specification

Version: 1.1
Revision Date: 01/16/2020
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4,4'-Methylene
bis(phenylisocyanate)
TWA
0.005 ppm
0.051 mg/m3
Canada. Quebec OELs. (Ministry of Labor -
Regulation Respecting the Quality of the Work
Environment), as amended (09 2017)
1,2,4-Trimethylbenzene
TWA
25 ppm
123 mg/m3
Canada. Alberta OELs (Occupational Health &
Safety Code, Schedule 1, Table 2), as
amended (07 2009)
1,2,4-Trimethylbenzene
TWA
25 ppm
Canada. British Columbia OELs. (Occupational
Exposure Limits for Chemical Substances,
Occupational Health and Safety Regulation
296/97, as amended) (07 2007)
1,2,4-Trimethylbenzene
TWA
25 ppm
Canada. Ontario OELs. (Control of Exposure to
Biological or Chemical Agents), as amended
(11 2010)
1,2,4-Trimethylbenzene
TWA
25 ppm
123 mg/m3
Canada. Quebec OELs. (Ministry of Labor -
Regulation Respecting the Quality of the Work
Environment), as amended (09 2017)
Polymethylene polyphenyl
isocyanate
TWA
0.005 ppm
Canada. British Columbia OELs. (Occupational
Exposure Limits for Chemical Substances,
Occupational Health and Safety Regulation
296/97, as amended) (07 2007)
CEILING
0.01 ppm
Canada. British Columbia OELs. (Occupational
Exposure Limits for Chemical Substances,
Occupational Health and Safety Regulation
296/97, as amended) (07 2007)
1,3,5-Trimethylbenzene
TWA
25 ppm
Canada. British Columbia OELs. (Occupational
Exposure Limits for Chemical Substances,
Occupational Health and Safety Regulation
296/97, as amended) (07 2007)
1,3,5-Trimethylbenzene
TWA
25 ppm
Canada. Ontario OELs. (Control of Exposure to
Biological or Chemical Agents), as amended
(11 2010)
1,3,5-Trimethylbenzene
TWA
25 ppm
123 mg/m3
Canada. Quebec OELs. (Ministry of Labor -
Regulation Respecting the Quality of the Work
Environment), as amended (09 2017)
Crystalline Silica (Quartz)/
Silica Sand - Respirable
fraction.
TWA
0.025 mg/m3
Canada. British Columbia OELs. (Occupational
Exposure Limits for Chemical Substances,
Occupational Health and Safety Regulation
296/97, as amended) (07 2007)
Crystalline Silica (Quartz)/
Silica Sand - Respirable
fraction.
TWA
0.10 mg/m3
Canada. Ontario OELs. (Control of Exposure to
Biological or Chemical Agents), as amended
(06 2015)
Crystalline Silica (Quartz)/
Silica Sand - Respirable dust.
TWA
0.1 mg/m3
Canada. Quebec OELs. (Ministry of Labor -
Regulation Respecting the Quality of the Work
Environment), as amended (09 2017)
Chemical name
Type
Exposure Limit Values
Source
Diisodecyl phthalate
TWA
5 mg/m3
Canada. Ontario OELs. (Control of Exposure to
Biological or Chemical Agents), as amended
(11 2010)
Calcium Carbonate
(Limestone) - Total dust.
STEL
20 mg/m3
Canada. British Columbia OELs. (Occupational
Exposure Limits for Chemical Substances,
Occupational Health and Safety Regulation
296/97, as amended) (07 2007)
TWA
10 mg/m3
Canada. British Columbia OELs. (Occupational
Exposure Limits for Chemical Substances,
Occupational Health and Safety Regulation
296/97, as amended) (07 2007)