Registration Dossier
Registration Dossier
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EC number: 804-773-2 | CAS number: 427165-44-4
Endpoint summary
Administrative data
Description of key information
Additional information
According to a Mackay Level I model calculation, the main target compartments for 9,9'-[1,1'-biphenyl]-4,4'-diylbis-9H-fluoren-9-ol will be sediment (46.3 %) and soil (45.8 %). With a calculated log Koc of 2.801, the sorption potential to soil or sediment organic matter is expected to be moderate (Blume scale).
The QSAR calculated rate constant for the OH sensitized photodegradation of 9,9'-[1,1'-biphenyl]-4,4'-diylbis-9H-fluoren-9-ol is approximately 24.6621E-12 cm3/(molecule * s) (AopWin Computer Program, Vers. 1.92, integrated in U.S. EPA's EPI program Vers. 4.10). At 500,000 OH radicals / cm3 (typical for central Europe), this corresponds to a half-life of 14.7 hours. The substance showed low degradation in a study for ready biodegradation, though some biodegradation should be possible after adaption in view of the partially oxidized hydrocarbon structure.
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