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Environmental fate & pathways

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The ready biodegradation of TREGDMA was investigated in a study conducted according to OECD Guideline 301 B (CO2 evolution test), adopted 17th July 1992, and EU Method C.4 -C, 31 July 1992, over a period of 28 days using sewage sludge sampled from the aeration tank of a predominantly domestic sewage treatment plant as inoculum. The biodegradation rate was determined by measurement of CO2 evolution. Inoculum blank and procedural/functional control with the reference substance sodium acetate were performed.

The test item proved to be readily biodegradable and fulfilling the 10-d window criterion.

The 10-day window started on day 7. Biodegradation achieved 61% at the end of the 10 day window (day 17) and 85% at the end of the test period.The functional control reached the pass level >60% after 14 d (68.5%).

 

According to Annex IX 9.2.1.2. Column 2, a study on biodegradation in water and sediment does not need to be conducted as the substance is readily biodegradable (experimental result please see chapter 5.2.1).

 

According to Annex IX 9.2.1.3. Column 2, a study on biodegradation in soil does not need to be conducted as the substance is readily biodegradable (experimental result please see chapter 5.2.1.).