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Based on its physico-chemical properties 4,4´-(9H-fluoren-9-ylidene)bis(2-chloroaniline) (CAS No. 107934-68-9) will mainly distribute into soil and sediment, where it can be regarded as persistent due to its poor degradability. However due to its self-contained use environmental exposure of the test substance can be disregarded. 4,4´-(9H-fluoren-9-ylidene)bis(2-chloroaniline) shows a high adsorption potential indicated by the log Kow (6.49, calculated) and the log Koc (4.52, measured).