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The Pesticide Properties DataBase (or PPDB) is a website and relational database managed by the Agriculture & Environment Research Unit at the University of Hertfordshire that provides information about pesticides. The database as originally developed as part of a project funded by the European Union and much of its data come from EU monographs.^[1][2] The entries are cited to their source publication and tagged by the database managers with a level of confidence in the data, from 1 to 5,^[1] and an internal rolling review checks all data at least once yearly.^[3]

PPDB had over a million pageloads, and was cited 360 times, in 2014, including references from regulatory organisations.^[3]

It lists over 1800 pesticide chemicals and common metabolites that form from pesticide degradation in soil. It was principally developed to support risk assessments,^[4] and includes physicochemical and ecotoxological data.^[1]

• Abstract looks promising for history and review, need to get full article to verify: Lewis, Kathleen A.; Tzilivakis, John; Warner, Douglas J.; Green, Andrew (2016). "An international database for pesticide risk assessments and management". Human and Ecological Risk Assessment: An International Journal. 22 (4): 1050–1064. doi:10.1080/10807039.2015.1133242.

• Official website
• Agricultural Research Service (ARS) Pesticide Properties Database, a US Government equivalent that is no longer updated since 2001. Now links to PPDB, but the ARS database is still available for download.