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Environmental fate & pathways

Biodegradation in soil

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According to REACh Annex XI, a simulation test to investigate biodegradation in soil is scientifically unjustified. A simulation test should provide data on biodegradation under specified environmentally relevant conditions. The non-degradation (0 % degradation after 28 days) in a study according to OECD Guideline 301E (Ready biodegradability: Modified OECD Screening Test) and the non-inherent biodegradation (10% degradation after 28 days) in a study according to the OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I)) provide sufficient information to confirm the slow degradation in the environment without the need for a further simulation test. No additional information would be obtained through that test.

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