Globally Harmonized System of Classification and Labelling of Chemicals is designed to help chemical industry professionals understand and implement GHS and learn how to independently classify substances with confidence. This book is a practice manual, ideal for individual or group training, based on a successful Spanish-language publication that is already in use in Europe to satisfy REACH requirements. The book is divided into three parts: physical-chemical hazards, human health hazards, and eco-toxicological hazards. The core content focuses on brief descriptions of each hazard which impacts classification and labeling, highlighting the differences between the old and new system, and supplemented with numerous examples and practice exercises and solutions. The new classification system is quite different, not just in terms of the relevant cut-off levels for classifying but also in the names assigned to hazards, warning language, pictograms, and design specifications for labels. This practical manual is the only resource that contains proven strategies for independent classification of hazards and teaching and implementing the new guidelines.