The Challenge to Industry initiative, launched in February 2007 as part of the federal government’s overall Chemicals Management Plan, involves 200 substances that have been identified as high priorities among 4,300 chemical substances that have been listed for review of their toxicity to human health and the environment.

The notice on Batch 10 substances is available at http://www.gazette.gc.ca/rp-pr/p1/2009/2009-06-20/html/notice-avis-eng.html#d103. The notice on the Batch 11 substances is available at http://www.gazette.gc.ca/rp-pr/p1/2009/2009-06-20/html/notice-avis-eng.html#d108.