This collection of data on more than 130 chemicals gives users the facts they need to recognize and describe potentially dangerous chemicals. Thorough and well-structured information is given on: - physiochemical data, - toxicological and ecotoxicological aspects, - threshhold values, - use and disposes of many industrial chemicals and herbicides.<br> <br> The systematic depiction of data enables comparisons among chemicals to be drawn. A General Section discusses the basis and procedure necessary to judge how dangerous the chemicals are. The most important legal regulations are listed and a glossary ensures that the user can easily understand the descriptions.<br> <br> In the Third Edition the data was updated and supplemented with information on ecotoxicology, expositions, environmental conduct and risk to the environment.