Chemical Hazardous cover a wide spectrum of chemicals including explosives, flammable chemicals, corrosives etc. There are more than 70,000 chemicals in use with another 500-1000 added each year. Many of these chemicals are categorized as hazardous and they are often subject to chemical regulations. Mitigating the risks associated with hazardous materials may require the application of safety precautions during their transport, use, storage and disposal. Many legal requirements have been introduced into international legislation over the years to protect people and the environment from the potential adverse effects of exposure to hazardous chemicals. However, although significant reductions in pollution from major industrial sources have been made, basic information on the public health and environmental hazards of many chemicals placed on the market for use in manufacturing processes and in everyday products is still lacking This book summarizes the common hazardous chemicals in use and methods of identification based on the Globally Harmonized System of Classification and Labeling of Chemicals.