Registration Dossier
Registration Dossier
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EC number: 270-472-2 | CAS number: 68441-68-9
Endpoint summary
Administrative data
Description of key information
Additional information
Tetraesters of 2,2-bis(hydroxymethyl)propane-1,3-diol and decanoic and octanoic acid (CAS 68441-68-9) is characterised by low water solubility (< 0.05 mg/L, 20 °C), low vapour pressure (< 0.0001 Pa, 20 °C), a high estimated log Koc (> 5.0, KOCWIN v2.00) and a high estimated log Kow (log Pow > 10, KOWWIN v1.68). Furthermore, the substance is readily biodegradable (75% in 28 d, OECD 301 F).
Based on the low vapour pressure, evaporation into air and the transport through the atmospheric compartment are unlikely. Thus, soil and sediment are expected to be the main compartment for environmental distribution. According to the Guidance on Information Requirements and Chemical Safety Assessment, Chapter R.7b (ECHA, 2017) a positive result in a test for ready biodegradability can be considered indicative of rapid and ultimate degradation in most environments, including biological sewage treatment plants (STP) where the substance will be extensively removed in the primary settling tank and fat trap. Thus, only limited amounts will get in contact with activated sludge organisms in STPS and the concentration of the substance in effluents of conventional STPs is presumably marginal. Moreover, the substance is not expected to persist in the environment and abiotic hydrolysis is not relevant due to ultimate elimination in natural environments.
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