Registration Dossier
Registration Dossier
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EC number: 285-206-0 | CAS number: 85049-36-1
Sediment toxicity
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
According to Annex VIII of Regulation (EC) No 1907/2006 the generation of sediment data is not required. Sediment toxicity is contemplated since the physico-chemical properties of Fatty acids, C16-18 and C18-unsatd., ethyl esters (CAS 85049-36-1) indicate a possible distribution to the sediment. Experimental data evaluating the toxicity of the substance to sediment organisms are not available. Since the substance is readily biodegradable, exposure of sediment organisms is unlikely. According to the Guidance on information requirements and chemical safety assessment, Chapter R.7b, readily biodegradable substances can be expected to undergo rapid and ultimate degradation in most environments, including biological Sewage Treatment Plants (STPs) (ECHA, 2012). Therefore, after passing through conventional STPs, only low concentrations of these substances are likely to be (if at all) released into the environment. Furthermore, the substance is poorly soluble in water (< 1 mg/L). The Guidance on information requirements and chemical safety assessment, Chapter R7.b (ECHA, 2012) 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. (Guidance on information requirements and chemical safety assessment, Chapter R.7a, (ECHA, 2012)) and the rest will be extensively biodegraded (due to ready biodegradability). Thus, discharged concentrations of these substances into the aqueous/sediment compartment are likely to be negligible.
An acute or chronic toxicity of the substance is not indicated by the available read across data. Thus the substance is not expected to be acutely or chronically toxic to sediment organisms. In addition, available data indicate that Fatty acids, C16-18 and C18-unsatd., ethyl esters (CAS 85049-36-1) is not bioaccumulative. If the substance is ingested by organisms a fast metabolisation is expected. Based on the available information, toxicity to sediment organisms is not expected to be of concern.
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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