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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Diss Factsheets

Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Administrative data

Link to relevant study record(s)

Description of key information

No experimental data are available.

A study on the long-term toxicity to terrestrial plants performed according to OECD 208 is available for the test substance

Key value for chemical safety assessment

Additional information

In Annex X, Section 9.4, Column 2 of Regulation (EC) No 1907/2006, it is laid down that long-term toxicity testing shall be proposed by the registrant if the results of the chemical safety assessment according to Annex I indicate the need to investigate further the effects of the substance and/or degradation products on terrestrial organisms.  The substance is not supposed to be directly applied to soil. An indirect exposure to soil via sewage sludge transfer is unlikely since the substance is biodegradable. The substance is biodegradable based on an enhanced ready biodegradability test passing the test level of 60% CO2/ThCO2 but not meeting the 10-day window (BASF SE, 2012; see IUCLID Ch 5.2.1); therefore, the substance is assessed to be not P/vP. The substance is also not B/vB based on the low log Kow (log Kow < 3, see IUCLID Ch. 4.7).  Following Table R.7.11-2 of REACH Guidance Document R.7c (ECHA, 2017), the substance belongs to soil hazard category 3. Therefore, the risk to the soil compartment will be assessed based on the comparison of the PNEC derived using the equilibrium partitioning method (EPM) and the results of a long-term soil toxicity test with the most sensitive organism group as indicated from aquatic toxicity data. In case of 1,2-dimethylimidazole, algae are the most sensitive trophic level; therefore, a toxicity test on terrestrial plants was conducted according to OECD 208 (BASF SE, 2022). Consequently, a need to investigate further the effect on terrestrial organisms is not indicated. Therefore, no other data doesn’t need to be conducted since an appropriate long-term study on terrestrial plants is available.