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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Jenkins (1990) is a GLP-compliant, closed bottle ready biodegradability study, with reference compounds, testing oxygen consumption, which follows OECD guideline 301D. The study is considered reliable and adequate for assessment. Oxygen consumption in vessels containing tert-dodecanethiol was negligible, indicating that it was not readily degradable under the conditions of the test.


Davis (2009) is a GLP-compliant ready biodegradation study following OECD guideline 310. The study can be considered reliable and suitable as a study for this endpoint. Primary degradation is observed (up to 83% in 28 days) but no CO2 is produced from TDM and almost the same decay of TDM is also observed in presence of sterilised inoculum (MLSS). Therefore no real biodegradation can be concluded from this study.


In Thiebaud (1994), the aerobic biodegradation of tert-dodecanethiol in water was examinated during 28 days through OECD Guideline 301 D and EU Method C.4 -E. The results have shown that 10.4 % of the substance is degraded after 28 days. Therefore, according to these results, tert-dodecanethiol is considered as not readily biodegradable. In test conditions, the substance is not inhibitory.