Since its inception in the early 1950's, this book has become the number one resource for those who need to evaluate the hazard of substances used in commerce. Now in its eleventh edition, it contains extensive data on approximately 26,000 substances, including 2000 new entries. The three--volume set now includes Immediately Dangerous Life or Health (IDHL) levels for approximately 1000 chemicals, proving essential for designing adequate ventilation systems and selection of respiratory protection. Other highlights include: A special appendix containing information of nerve gases and biological agents that might appear in the workplace as a result of terrorist activity It is the only reference that combines, for so many substances, data on toxicological, fire, reactivity, explosive potential, and regulatory information Regulatory data covers exposure level classifications for a number of regulatory agencies, from OSHA to the U.S. Department of Transportation Sax's Dangerous Properties of Industrial Materials, Eleventh Edition provides an essential, up--to--date resource for professionals in industrial hygiene, safety, emergency response, law, and policymaking.