CA HC-SC
Lead page for information about canada's implementation of un sanctioned global standards for labelling and classifying hazardous chemicals, harmonizing related regulations, communication systems and safety standards with links to similar international sites
http://www.hc-sc.gc.ca/ahc-asc/intactiv/ghs-sgh/index_e.html
OSHA (US)
Globally harmonized system of classification and labeling of chemicals
http://www.osha.gov/dsg/hazcom/ghs.html#2.0
US BLR
Are you ready for ghs? - safety news on hazard communication
http://safety.blr.com/display.cfm/id/102926
US Chem advisory overview
A chemical regulatory compliance company offering training, services, and software solutions for your regulatory compliance needs.
http://www.chemadvisor.com/news_articles.aspx?article=85
US EPA
Globally harmonized system for classification and labelling of chemicals pesticide, pesticides, human health
http://www.epa.gov/oppfead1/international/globalharmon.htm