Registration Dossier
Registration Dossier
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EC number: 274-765-6 | CAS number: 70693-39-9
Endpoint summary
Administrative data
Description of key information
The hazard assessment is based on the data currently available. New studies with the registered substance and/or other member substances of the polyol esters category will be conducted in the future. The finalised studies will be included in the technical dossier as soon as they become available and the hazard assessment will be re-evaluated accordingly.
Additional information
The hazard assessment is based on the data currently available. New studies with the registered substance and/or other member substances of the polyol esters category will be conducted in the future. The finalised studies will be included in the technical dossier as soon as they become available and the hazard assessment will be re-evaluated accordingly.
The target substance Monopentaerythritol tetraesters and dipentaerythritol hexaesters of valeric, heptanoic and nonanoic acids is characterised by a low vapour pressure (< 0.0001), a low water solubility (< 2.01 mg/L) and a log Koc indicating a high adsorption potential to soil and sediment particle (> 5). Based on the result from a structurally related substances, the target substance is ready biodegradable (75% - 96 after 28 d, according to OECD criteria). Thus, it is expected that an extensive elimination of the substance in sewage treatment plants will occur. Moreover, in the case insoluble chemicals enter a standard Sewage Treatment Plant (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, according to the Guidance on information requirements and chemical safety assessment, Chapter R.7b (ECHA, 2017). As a result of the high adsorption potential of the substance (log Koc > 5) 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)). In conclusion, the concentration of the substance in conventional STP effluents is presumably marginal. Abiotic degradation via hydrolysis is considered as not relevant for the substance. Moreover, the substance is not volatile (vapour pressure < 0.0001 Pa at 20 °C) and thus evaporation to the air and subsequent transport through the atmosphere to other environmental compartments is not likely. The bioavailability of Monopentaerythritol tetraesters and dipentaerythritol hexaesters of valeric, heptanoic and nonanoic acids is expected to be low due to the predicted environmental fate and QSAR calculation.
Due to the low water solubility and the ready biodegradability a relevant uptake and bioaccumulation in aquatic organisms is not expected. This is supported by a low calculated BCF value 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 valeric, heptanoic and nonanoic 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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