Organized by functional category,this compilation provides important chemical and toxicity data for the 1800 substances registered by the US Environmental Protection Agency and used largely in the agricultural environment. The chemical, physical and bioactivity properties of each agent are recorded along with a comprehensive listing of product trade names and synonyms as well as manufacturers. The EPA status of each agent is given and each record carries the appropriate CAS Registry Number and the associated EINECS Number where available. The Merck Index number is provided for all chemicals in this edition which also appear in the 13th edition of the Merck Index. Wherever possible, the following information is also displayed for each entry: melting point, boiling point, density or specific gravity, refractive index, optical rotation, ultraviolet absorption, and solubility as well as chronic and acute toxicities.