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Environmental fate & pathways

Endpoint summary

Administrative data

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The test substance did not meet the criteria for Ready Biodegradation based on the results of a ready biodegradation test (OECD 301D, Closed Bottle Test). Neither Biochemical Oxygen Demand (BOD) nor change in the test substance concentration were observed in the 28-day test. For inherent biodegradation (OECD 302C, Inherent Biodegradability: Modified MITI Test (II)), the test substance attained almost 40% biodegradation based on BOD measurements and residue analysis of the test substance showed greater than 44% degradation by day 28. The results indicated inherent, primary biodegradation. No rate constant for elimination in a sewage treatment plant can be provided, however. The results of inherent biodegradation tests can be used for determining a rate constant only if a level of 70% degradation is reached within 14 days in the Modified MITI Test (II). Testing beyond a test for inherent biodegradation, such as a simulation biodegradation test, is not required.

Under environmentally relevant conditions, the test substance has low water solubility, a high Henry's Law constant at 25°C, and a high potential for sorption to solids. It is expected to partition primarily to air with some partitioning to soil or sediments if released to the environment.