Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 604-580-1 | CAS number: 147256-33-5
Endpoint summary
Administrative data
Description of key information
Additional information
Two key studies performed according to OECD 301F confirmed that Fatty acids, C18-unsatd., dimers, mixed esters with oleic acid and trimethylolpropane (CAS No. 147256-33-5) is readily biodegradable. Therefore, the substance will not persistent in the environment. The degradation via abiotic hydrolysis is not considered as a relevant degradation pathway in the environment since the determined average recoveries in a preliminary test according to OECD 111 revealed that the substance is stable.
The adsorption potential for Fatty acids, C18-unsatd., dimers, mixed esters with oleic acid and trimethylolpropane is high (log Koc > 5, KOCWIN v2.00). Hence, soil and sediment are expected to be the main targets for environmental distribution. Nevertheless, perstistency in these compartments is not expected since the substance is readily biodegradable and it will be therefore ultimately degraded in sewage treatment plants. Evaporation into air and the transport through the atmospheric compartment is not expected since the substance is not volatile based on the low vapour pressure of ≤ 0.48 Pa at 20 °C (OECD 104). Accumulation in air and the subsequent transport to other environmental compartments is not anticipated. However, if released into air, the substance is susceptible to indirect photodegradation by OH-radicals with a DT50 of 1.13 h – 54.28 h (AOPWIN v1.92).
Furthermore, it can be concluded that the bioaccumulation potential of Fatty acids, C18-unsatd., dimers, mixed esters with oleic acid and trimethylolpropane is negligible since the low water solubility (< 0.05 mg/L), readily biodegradability and high adsorption potential (log Koc > 5) reduce the availability of the substance in water. Furthermore, the high molecular weight (625-1763 g/mol) reducing significantly the absorption into organisms due to steric hindrance to cross biological membranes. Calculated BCF/BAF values ((BCF:0.89 L/kg; BAF: 0.89 - 10.92 L/kg; Arnot-Gobas estimate, upper trophic; BCFBAF v3.01) support this assumption.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
