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Pesticide Registration

PRN 90-1: Inert Ingredients in Pesticide Products; Revised Policy Statement

May 1, 1990

Notice To: Manufacturers, Producers, Formulators, and Registrants of Pesticide Products

Attention: Persons Responsible for Federal Registration of Pesticides Containing Inert Ingredients

Subject: Inert Ingredients in Pesticide Products; Revised Policy Statement

The Environmental Protection Agency (EPA) has published a Federal Register Notice (54 FR 58314; November 22, 1989) which revises certain policies regarding inert ingredients in pesticide products, as announced in PR Notice 87-06 (and 52 FR 13305, April 22, 1987). Registrants of products that contain the two inert ingredients of toxicological concern which have been added to List 1 will be required to submit applications to amend their registrations to add a label statement identifying the particular inert ingredient. Several other clarifications to the original document are also included. For your information, a copy of 54 FR 48314 is attached to this PR Notice.

Because of our delay in transmitting this Federal Register Notice to you, we are extending the deadline for submitting registration amendments to add the required label statement for the new List 1 inert ingredients. The new deadline for submission of these amendments is August 22, 1990. The May 22, 1991 deadline for products released for shipment to have the amended label in place is not being extended.

For additional information, please contact the Inerts Branch (

Anne E. Lindsay, Director
Registration Division (H7505C)

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