Since its publication in the 1950s, this important resource is considered the bible by those who need to evaluate the potential hazard of substances used in commerce. Now in its twelfth edition, Sax's Dangerous Properties provides extensive data on approximately 28,000 substances, with the addition of nearly 2,400 new substances. Each entry includes a DPIM code, hazard rating, entry name, CAS number, DOT number, molecular formula, molecular weight, line structural formula, description of material and physical properties, and synonyms. The book also contains Immediately Dangerous to Life or Health (IDLH) levels for approximately 1,000 chemicals.