Registration Dossier
Registration Dossier
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EC number: 301-037-8 | CAS number: 93980-59-7
Endpoint summary
Administrative data
Description of key information
Additional information
Sorbitan tridocosanoate is characterized by a low water solubility (< 0.525 mg/L at 20 °C at pH 5.9, OECD 105), low volatilization potential (VP <0.0001 Pa at 20 °C (QSAR, ARChem SPARC. version 4.6)) and a high log Koc (3.404 - 16.387, KOCWIN v2.00), indicating a high adsorption potential to soil and sediment particles. Furthermore, Sorbitan tridocosanoate is not readily biodegradable according to OECD criteria (13% after 28 d, OECD 301F). A bioaccumulation or biomagnification of Sorbitan tridocosanoateis not expected based on the low bioavailability and the expected metabolitsation of the substance.
Degradation via abiotic hydrolysis is not considered to be a relevant degradation pathway in the environment since Sorbitan tridocosanoate has a low water solubility and comprises no hydrolysable groups.
Considering the low water solubility Sorbitan tridocosanoate and the high potential for adsorption to organic soil and sediment particles the main compartment for environmental distribution is expected to be the soil and sediment. The Guidance on information requirements and chemical safety assessment, Chapter R7.b (ECHA, 2017) states that 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. Nevertheless, once this contact takes place, these substances are expected to be removed from the water column to a significant degree by adsorption to sewage sludge (Guidance on information requirements and chemical safety assessment, Chapter R.7a, (ECHA, 2017). Thus, discharged concentrations of this substance (if at all) into the aqueous/sediment and soil compartment are likely to be low. An evaporation and subsequent transport through the atmosphere is not expected due to the low vapour pressure of the substance.
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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