据美国联邦公报消息，10月7日美国环保署（EPA）发布一条终期条例，豁免2-亚甲基丁二酸均聚物钠盐（butanedioic acid，2-methylene-，homopolymer，sodium salt）在食品或饲料中的最大残留限量。

本条例自发布之日起生效，征求意见截止日期为2015年12月7日。

部分原文报道如下：

This regulation establishes an exemption from the requirement of a tolerance for residues of butanedioic acid, 2-methylene-, homopolymer, sodium salt; when used as an inert ingredient in a pesticide chemical formulation. Itaconix 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 butanedioic acid, 2-methylene-, homopolymer, sodium salt on food or feed commodities.

原文链接：<https://www.federalregister.gov/articles/2015/10/07/2015-25567/butanedioic-acid-2-methylene--homopolymer-sodium-salt-inert-ingredient-tolerance-exemption>