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Sediment toxicity

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Description of key information

 The chemical safety assessment according to Annex I of Regulation (EC) No 1907/2006 does not indicate the need to investigate further the toxicity to sediment organisms.

Key value for chemical safety assessment

Additional information

According to the Guidance on information requirements and chemical safety assessment, R.7b (ECHA, 2017) no sediment testing is necessary if the log Pow is < 3 which triggers the potential to adsorb or bind onto sediment. As Sodium N-lauroylsarcosinate (CAS 137-16-6) has a log Pow of 0.37 no potential for adsorption is expected. Thus, no sediment testing is required.

In addition, the environmental exposure assessment for Sodium N-lauroylsarcosinate (CAS 137-16-6) indicates no risk for the sediment compartment (all RCR < 1; please refer to Chapter 9 and 10 of the Chemical Safety Report for detailed information).

Furthermore, due to the high water solubility of the substance (456.4 g/L) and the low log Pow of 0.37 sediment is not the compartment of concern. Moreover, the substance is determined to be readily biodegradable and 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, 2017). Therefore, this substance has a low potential for persistence and chronic exposure of sediment organisms is unlikely.

Thus, taking all these information into account, no further long-term test with sediment organism is proposed for Sodium N-lauroylsarcosinate (CAS 137-16-6).