MOL Consultation on Occupational Exposure Limits Underway

Friday, December 16, 2011

The Ontario Ministry of Labour (MOL) is seeking input on the proposed changes to the occupational exposure limits (OELs) of 9 hazardous chemical substances that are set out in Regulation 883 – Control of Exposure to Biological or Chemical Agents.

The MOL is considering adopting the changes recommended by the American Conference of Governmental Industrial Hygienists (ACGIH). Proposed changes for the substances listed below may include a reduction in OEL or changes in particle size fraction. This could impact sampling and analytical methods used by industry.

The proposed substances are:

Acetic anhydride [108-24-7]
Allyl chloride [107-05-1] – Skin
Carbon black [1333-86-4]
Ethyl benzene [100-41-4]
Maleic anhydride [108-31-6]
Methyl isopropyl ketone [563-80-4]
2,4-Pentanedione [123-54-6] – Skin
4,4’-Thiobis(6-tert-butyl-m-cresol) [96-69-5]

Full press release, and how to offer input, can be found at the link below: