If I have a GHS label do I need a T.D.G. label?

Yes, T.D.G. labels must still be on the external part of a shipped container and must meet Transport Canada (T.D.G.) requirements as set forth in the Transportation of Dangerous Goods Regulations. Health Canada will allow both T.D.G. and GHS pictograms for the same hazard on a label. While the T.D.G. diamond label is required for all hazardous chemicals on the outside shipping container, chemicals in smaller containers inside the larger shipped container do not require the T.D.G. diamond but do require the GHS pictograms.