The Globally Harmonized System for the Classification and Labelling (The GHS) - Implementation of the GHS in Canada

Transportation of Dangerous Goods

Introduction

Although Dangerous Goods labelling is both hazard-based and risk-based requirements for chemicals are predominately the former. Only acute health and physical hazards are addressed.

With a few exceptions, labels for the nine Classes of Dangerous Goods are the same as those shown in the United Nations Recommendations on the Transport of Dangerous Goods Model Regulations. Symbols used for acute health and physical hazards are the same as those used in the GHS, where they are used.

Although there are no provisions for warning statements or signal words on labels, Class numbers must be displayed in the lower section of the square-on-point label.

In addition packages must be marked with the proper Shipping Name and corresponding UN number.

Safety Data Sheets are not currently required under TDG but, each consignment of Dangerous Goods must be accompanied by a Shipping Document. This document contains a description of the Dangerous Goods including the Shipping Name, primary and subsidiary classifications, the UN number, the Packing Group, and a 24-Hour telephone number.

Aquatic toxicity is addressed using the criteria from the International Maritime Dangerous Code (IMDG Code). Since the Sub-Committee of Experts on the Transport of Dangerous Goods have recently accepted the GHS criteria, it is expected that the TDG requirements will change.