EPA exempts tongue-twisting polymer from pesticide tolerances.
Published Date: 8/7/2026
Rule
Summary
This regulation establishes an exemption from the requirement of a tolerance for residues of 2-propenoic acid, 2-methyl-, telomer with 1-dodecanethiol, and 2-methyloxirane polymer with oxirane monoether with 1,2-propanediol mono(2-methyl-2-propenoate) (CAS Reg. No 1186225-21-7) when used as an inert ingredient in a pesticide chemical formulation. Spring Regulatory Sciences on behalf of Clariant Corporation submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of 2-propenoic acid, 2-methyl-, telomer with 1-dodecanethiol, and 2-methyloxirane polymer with oxirane monoether with 1,2-propanediol mono(2-methyl-2-propenoate) on food or feed commodities when used in accordance with these exemptions.
Analyzed Economic Effects
3 provisions identified: 3 benefits, 0 costs, 0 mixed.
Tolerance Exemption for Named Polymer
The EPA exempts residues of the polymer (CAS No. 1186225-21-7, number average molecular weight 3,300 Daltons) from the requirement to establish a tolerance when it is used as an inert ingredient in pesticide formulations. That means regulators will not set a maximum permissible level for this polymer on food or feed commodities when it is used according to the exemption, effective August 7, 2026.
EPA Finds Polymer Low-Risk to Public Health
EPA determined the polymer meets low‑risk polymer criteria, is not readily biodegradable, is poorly absorbed, and presents no anticipated mammalian toxicity; EPA concluded there is a reasonable certainty of no harm to the U.S. population, including infants and children. EPA also did not apply an additional 10X safety factor for infants and children because of the expected low toxicity.
No Enforcement Analytical Method Required
Because EPA is establishing an exemption without a numerical limit, the agency states that an analytical method for enforcement is not required. This reduces the need for testing protocols tied to enforcement for this polymer when used under the exemption.
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Key Dates
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