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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

Additional information

Experimental data investigating the bioaccumulation potential of Amides, C18, branched and linear are not available. The substance components are characterised by a log Pow > 5 indicating a potential to bioaccumulate in biota. However, the information gathered on environmental behaviour and metabolism in combination with the QSAR-estimated BCF values provide enough evidence to state that the substances is not likely to bioaccumulate. The substance is insoluble in water (water solubility < 0.05 mg/L). The Guidance on information requirements and chemical safety assessment, Chapter R.7b, 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 (ECHA, 2014). Therefore, after passing through conventional STPs, only low concentrations of these substances are likely to be (if at all) released into the environment.
Thus, the most relevant exposure route for aquatic organisms such as fish will be via food ingestion or contact with suspended solids. If the substance is ingested by organisms enzymatic hydrolysis to fatty acids and ammonia is expected (see IUCLID section 7.1.1). Fatty acids are an important energy source for many organisms. A significant accumulation of the substances in organisms is therefore not anticipated.
The conclusion is further supported by estimated bioconcentration (BCF) and bioaccumulation (BAF) values calculated for the iso and linear component of the substance (BCFBAF v3.01 program, Estimation Programs Interface Suite™ for Microsoft® Windows v 4.10., US EPA). The calculation assumes biotransformation (Arnot-Gobas method). The BCF values estimated for the iso and linear component range from 146.3 – 151.2 L/kg. The range of the calculated BAF values is 159 – 170.5 L/kg.