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Environmental fate & pathways

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There was early on evidence that Tert-butyl-4-methoxy-4'-dibenzoylmethane (BMDBM) would not be readily biodegradable under aerobic conditions. Therefore an anaerobic biodegradation study was conducted, using digested sludge from a municipal wastewater treatment facility. The test result was negative again. The following study on inherent biodegradability revealed that the test item is not biodegradable.

Based on the ECHA guidance documents on biodegradability, if a study on inherent biodegradability reveals negative results, the substance shall be regarded as not biodegradable, and further testing shall not be considered. Therefore simulation studies in sediments and soil were being waived.