Specification
Version: 1.0 
Revision Date: 03/28/2016 
000000023874 
8/18 
bis(phenylisocyanate)   (Occupational Exposure Limits for 
Chemical Substances, Occupational 
Health and Safety Regulation 296/97, 
as amended) (07 2007) 
  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) 
4,4'-Methylene 
bis(phenylisocyanate)  
TWAEV  0.005 ppm    Canada. Ontario OELs. (Control of 
Exposure to Biological or Chemical 
Agents) (11 2010) 
  CEV  0.02 ppm    Canada. Ontario OELs. (Control of 
Exposure to Biological or Chemical 
Agents) (11 2010) 
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) (12 
2008) 
Carbon Black - 
Inhalable 
TWA    3 mg/m3 Canada. British Columbia OELs. 
(Occupational Exposure Limits for 
Chemical Substances, Occupational 
Health and Safety Regulation 296/97, 
as amended) (09 2011) 
Carbon Black   TWAEV    3.5 mg/m3 Canada. Ontario OELs. (Control of 
Exposure to Biological or Chemical 
Agents) (11 2010) 
Carbon Black   TWA    3.5 mg/m3 Canada. Quebec OELs. (Ministry of 
Labor - Regulation Respecting the 
Quality of the Work Environment) (12 
2008) 
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) 
  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) 
Polymethylene 
polyphenyl isocyanate  
TWAEV  0.005 ppm    Canada. Ontario OELs. (Control of 
Exposure to Biological or Chemical 
Agents) (11 2010) 
  CEV  0.02 ppm    Canada. Ontario OELs. (Control of 










