Registration Dossier
Registration Dossier
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EC number: 607-240-0 | CAS number: 23511-73-1
Endpoint summary
Administrative data
Description of key information
Additional information
The substance 2-Phenoxyethyl octanoate (CAS 23511-73-1) is characterised by a low water solubility (< 1 mg/L at 19.8 °C, pH = 6.7), a high log Koc value (log Koc: 4.16) and a low vapour pressure (VP 0.00338 Pa at 20 °C) indicating that the substance would mainly distribute to soil and sediment when released to the environment. However, an exposure of these environmental compartments is unlikely, since the substance is expected to be extensively eliminated in conventional sewage treatment plants. The substance is readily biodegradable as demonstrated in a biodegradation study according to OECD 301B. The substance reached a degradation rate of 81% but did not meet the 10-day window criterion. Furthermore, in the case insoluble chemicals enter a standard Sewage Treatment Plant (STP), they will be largely removed in the primary settling tank and fat trap and thus, only limited amounts will get in contact with activated sludge organisms. As a result of the high adsorption potential of the substance (log Koc =4.16) a removal from the water column to a significant degree by adsorption to sewage sludge can be expected (Guidance on information requirements and chemical safety assessment, Chapter R.7b, (ECHA, 2017). Based on the ready biodegradability and substance characteristics the substance concentration in conventional STP effluents is expected to be negligible. Abiotic degradation via hydrolysis is considered as not relevant for the substance.
Due to the low volatilization potential of the substance (VP 0.00338 Pa at 20 °C) an accumulation in air and subsequent transportation and deposition into other environmental compartments is not expected.
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