Using a clear and consistent format, this fourth edition contains more than 1,700 additional references, including adsorption data for more than 800 organic compounds and metals, Henry's Law constants for 1,850 compounds, aqueous solubility data for more than 2,500 compounds, toxicity data for 1,100 compounds, more than 31,000 synonyms, and more than 2,250 degradation products cross-referenced to parent compounds. Additional organic and inorganic solubilities in water, conversion factors, octanol-water partition coefficients, environmental fate data, analytical test methods, dielectric properties of various materials and liquids, and other tables and indexes have been added along with references for numerous physical parameters.