Registration Dossier
Registration Dossier
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EC number: 943-730-3 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
The target substance Monopentaerythritol tetraesters and dipentaerythritol hexaesters of 2-ethylhexanoic and n-valeric acids is characterised by a low vapour pressure (< 0.0001 Pa at 20 °C), a low water solubility (1.5-5.1 mg/L) and a log Koc indicating a high adsorption potential to soil and sediment particles (log Koc > 5). Based on the results from structurally related source substances the target substance is not readily biodegradable (4.6 - 28 % after 60 d, OECD 301B). Nevertheless, an extensive elimination of the substance in sewage treatment plants is expected by adsorption to suspended solids. According to the Guidance on information requirements and chemical safety assessment, Chapter R.7b (ECHA, 2017) once insoluble chemicals enter a standard STP, they will be extensively removed in the primary settling tank and fat trap and thus, only limited amounts will get in contact with activated sludge organisms. Due to the high adsorption potential of the substance (log Koc > 5, MCI, KOCWIN v2.00)) 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)). Therefore, the concentration of the substance in conventional STP effluents is presumably negligible. However, when released to the environment a partition from the water phase to soil and sediment is expected. Abiotic degradation is considered as not relevant for the substance since QSAR predicted a half-life > 1 year under environmental conditions. Moreover, the substance is not volatile (VP < 0.0001 Pa at 25 °C) and thus evaporation to the air and the transport through the atmospheric compartment is not likely. The bioavailability of Monopentaerythritol tetraesters and dipentaerythritol hexaesters of 2-ethylhexanoic and n-valeric acids is expected to be low due to the predicted environmental fate, and QSAR calculations.
A bioaccumulation or biomagnification through the food chain of the substance is not expected. The calculated BCF ranged from 0.893 to 6.322 L/kg ww (BCFBAF v3.01, Arnot-Gobas, including biotransformation, upper trophic). Please refer to IUCLID Section 5.3 for a detailed overview on bioaccumulation of Monopentaerythritol tetraesters and dipentaerythritol hexaesters of 2-ethylhexanoic and n-valeric acids.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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