EPA Restrictions on TCE, PCE, DCM in Effect May 1

April 30, 2025 - T. McCord

Effective Thursday, May 1, 2025 labs are required to follow EPA rules for TCE, PCE, and DCM.

Trichloroethylene (TCE) and Perchloroethylene (PCE)

• Any use of TCE and PCE is prohibited.
• All labs should dispose of any TCE or PCE in their lab, even if it isn’t actively being used.

Methylene Chloride/Dichloromethane (DCM)

• DCM should be replaced with a less hazardous chemical wherever possible.
• DCM use is restricted to designated, pre-approved spaces where additional safety controls are present.
• The EHS online Methylene Chloride Safety training must be completed prior to entry into a DCM space.
• The complete Dichloromethane Research Compliance Plan is available on the EHS website.

Training

• Lab personnel (faculty, staff, students) who work with or around methylene chloride: access required methylene choride training in Ability LMS.

For questions, contact MSU Chemical Safety Officer Genevieve Cottrell.