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Universe of Chemicals from which the June 2007 Draft List was Selected

The universe of chemicals from which the June 2007 draft list was selected included over 1,700 pesticide chemicals. This page presents an overview of the subsets of chemicals from which the draft list of 73 chemicals for initial Tier 1 screening was selected. EPA indicated in the September 27, 2005 Federal Register Notice (PDF) (17 pp, 125K, About PDF), that the universe of chemicals to be considered for initial screening would include: 1) pesticide active ingredients and 2) high production volume (HPV) chemicals that are also pesticide inerts.

Pesticide Active Ingredients

The Federal Insecticide, Fungicide and Rodenticide Act (FIFRA) defines a pesticide active ingredient as a chemical contained in pesticide products that prevents, destroys, repels, or mitigates any pest, or is a plant regulator, defoliant, desiccant, or nitrogen stabilizer. (7 U.S.C. 136a(2)(u)). The universe of pesticide active ingredients which are required to be screened for their potential to adversely affect the endocrine system corresponds to the active ingredients EPA has scheduled for review in its "registration review" program. The registration review schedule identifies all pesticide active ingredients that are used in currently registered products and indicates when they will be addressed in EPA's periodic registration review program.

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High Production Volume Pesticide Inerts

HPV chemicals are those substances that are not pesticide active ingredients and that are produced or imported into the U.S. in amounts greater than or equal to one million pounds per year. The list of HPV chemicals is based on the non-confidential list of 2002 Toxic Substances Control Act (TSCA) Inventory Update Rule (IUR) chemicals. A total of 2,708 HPV chemicals were identified.

Pesticide inert chemicals are defined as any ingredients in pesticide product formulations other than the active ingredient. (7 U.S.C. 136a (m)). A total of 2,775 pesticide inert chemicals were identified. OPP maintains an inventory of pesticide inert chemicals that are categorized into the following four lists:

A total of 643 chemicals were identified that are both an HPV and pesticide inert chemical.

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