EPA Provides Update on Existing Stock for Three Chlorpyrifos Products

024 chlorpyrifos can be legally applied to all crops it was formally labeled for use on. This follows the U.S. Court of Appeals for the Eighth Circuit overturning EPA’s 2021 ban on chlorpyrifos at the end of 2023.

When the 2021 ban went into effect, pesticide manufacturers began canceling their registrations for products containing chlorpyrifos. Now that chlorpyrifos is legal again, registrants are working with EPA to ensure existing stocks of those chlorpyrifos products can be used even if the manufacturer had previously canceled the registrations. 

Last week EPA issued an update on existing stock provisions for three chlorpyrifos products from Adama:

• Sale and distribution of existing stocks of Pyrinex Chlorpyrifos Insecticide (EPA Reg. No. 11678-58) is permitted until June 30, 2024.
• Sale and distribution of existing stocks of Chlorpyrifos 4E AG/Quali-Pro Chlorpyrifos 4E (EPA Reg. No. 66222-19) and Vulcan (EPA Reg. Nos. 66222-233) is permitted until April 30, 2025.
• Use of existing stocks of Chlorpyrifos 4E AG/Quali-Pro Chlorpyrifos 4E, and Vulcan on food, food processing sites, and food manufacturing sites must be consistent with the product labeling. Such use is permitted until June 30, 2025.
• Use of existing stocks Chlorpyrifos 4E AG/Quali-Pro Chlorpyrifos 4E, and Vulcan for non-food purposes is permitted until existing stocks are exhausted, as long as such use is in accordance with the labeling.

In 2025, chlorpyrifos will be restricted to only the following crops: alfalfa, apple, asparagus, cherry (tart), citrus, cotton, peach, soybean, strawberry, sugar beet, spring wheat, and winter wheat. This will be based on an amended proposed interim decision EPA is currently working on and expects to release in early 2025. NAAA is in communication with grower groups and registrants working on making sure aerial application is on the label for all of those crop and will continue to monitor all developments related to chlorpyrifos.