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# Recommendations for Residual Solvents
- URL: https://www.fdaweb.com/recommendations-for-residual-solvents/
- Published: 2020-05-27T12:00:00.000Z
- Updated: 2026-09-14T16:16:06.000Z
- Author: David McFarland
- Tags: FDA Policy/General, #legacy-id-D5146864

*Federal Register* notice: FDA has made available draft recommendations for new permitted daily exposures (PDEs) for the residual solvents 2-methyltetrahydrofuran, cyclopentyl methyl ether, and tert-butyl alcohol. The PDEs were developed according to the methods for establishing exposure limits included in the guidance for industry entitled “Q3C Impurities: Residual Solvents.” To view the notice, click [here](https://www.govinfo.gov/content/pkg/FR-2020-05-27/pdf/2020-11280.pdf?ref=fdaweb.com).