['Toxic and Hazardous Substances - OSHA']

10/17/2025

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What is the action limit (AL) and permissible exposure limit (PEL) for methylenedianiline (MDA)?

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What is the action limit (AL) and permissible exposure limit (PEL) for methylenedianiline (MDA)?

RegSense Safety & Health Construction Safety General Industry Safety Agriculture Safety Toxic and Hazardous Substances - OSHA Best Results FAQ English Focus Area Toxic and Hazardous Substances - OSHA USA

The AL for MDA is 5 parts per billion (ppb) and the PEL is 10 ppb as an eight (8)-hour time-weighted average (TWA).

['Toxic and Hazardous Substances - OSHA']

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