Thiocarbamates Group
Information sheet
These substances were identified for action under the third phase of Chemicals Management Plan (CMP). The assessment focused on two substances referred to collectively under the CMP as the Thiocarbamates Group.
| Substance group | CAS RN | Common name | DSL name | Fianl order and RIAS | Public comment on the draft screening assessment | Final screening assessment | Public comments on the proposed risk management approach | Proposed risk management approach | Conclusion on section 64 criteria | Follow-up activities |
|---|---|---|---|---|---|---|---|---|---|---|
| Thiocarbamates Group | 137-26-8 | TMTD, Thiram | Thioperoxydicarbonic diamide ([(H2N)C(S)]2S2), tetramethyl- | HTML | HTML | HTML | HTML | HTML | Meets one or more of the criteria | Refer to proposed risk management approach |
| 120-54-7 | DPTT | Piperidine, 1,1'-(tetrathiodicarbonothioyl)bis- | None | None | None | Does not meet | None planned at this time |
| Date | Activity |
|---|---|
| October 21, 2026 | Publication in Canada Gazette, Part II, Vol. 160, No. 21 of an order amending the DSL to apply the Significant New Activty (SNAc) provisions of the Canadian Environmental Act 1999 (CEPA) to TMTD. |
| April 4, 2026 | Publication in the Canada Gazette, Part I: Vol. 160, No. 14 of the Release Guidelines for Chemicals Used in the Rubber Product Manufacturing Sector. |
| March 22, 2025 | Publication of a consultation on the proposed Release Guidelines for Chemicals Used in the Rubber Product Manufacturing Sector for a 60-day public comment period. The related notice was published in the Canada Gazette, Part I: Vol. 159, No. 12. |
| October 8, 2022 | Publication in the Canada Gazette, Part I: Vol. 156, No. 41 of the proposed order adding TMTD to Schedule 1 to CEPA and start of a 60-day public comment period. |
| July 23, 2022 | Publication in Canada Gazette, Part I, Vol. 156, No. 30 of a notice of intent to amend the DSL to apply the Significant New Activity provisions of CEPA to TMTD and start of 60-day public comment period. |
| January 9, 2021 | Publication of the Final Screening Assessment for the Thiocarbamates Group. The Risk Management Approach for TMTD was also published for a 60-day public comment period. The related notice was published in the Canada Gazette, Part I, Vol. 155, No. 2. |
| February 3, 2018 | Publication and start of 60-day public comment period on the Draft Screening Assessment for the Thiocarbamates Group (including follow-up activities for TMTD) and the Risk Management Scope for TMTD. The related notice was published in the Canada Gazette, Part I: Vol. 152, No. 5. |
Follow-up activities
Following the publication of the draft screening assessment for thiocarbamates and the risk management scope for TMTD, stakeholder follow-up was conducted in regard to TMTD manufacture and import for latex production. Based on the information received, there is no evidence that TMTD is being used to produce latex products in Canada; however, there is evidence that these industrial activities are occurring in other areas, such as the United States and the European Union. Therefore, this activity may expand into Canada in the future.
As the final screening assessment determined that releases of TMTD to the environment from its use in manufacturing of solid rubber products is a source of concern, there could be exposures of concern if activities including manufacturing of TMTD or uses of the substance in liquid rubber (latex) manufacturing were to occur in Canada.
The proposed risk management actions include developing multi-pollutant release guidelines to manage toxic substances in the rubber products manufacturing sector including TMTD and BENPAT. The Release Guidelines for Chemicals in the Rubber Products Manufacturing Sector, were published in the Canada Gazette, Part I, on April 4, 2026. These guidelines incorporate the Code of Practice for the Environmentally Sound Management of Chemical Substances in the Chemicals, Plastics and Rubber Sectors.
In addition to the release guidelines, the SNAc provisions of CEPA have been applied to TMTD as a complementary instrument to notify the government of the manufacture of the substance and its use in the manufacture of liquid rubber (latex) products.