Registration Dossier

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Fate

Sodium capryliminiodipropionate is readily biodegradable which will limit the fraction going to surface water, sludge, soil and sediment. > 99.99% removal (primarily through biodegradation) was demonstrated in a CAS test. The substance is not expected to evaporate. The bioaccumulation potential is low.

 

Abiotic degradation

A hydrolysis test has been waived because the substance is readily biodegradable in accordance with column 2 of Annex VIII of Regulation 1907/2006/EC. Phototransformation in air, water and soil have not been assessed as these are not standard information requirements in Annex IX of the REACH Regulation.

 

Biodegradation

In the key ready biodegradation study according to OECD TG 301B (GLP, reliability 2) 91% biodegradation was found after 28 days. The 10 days window criterion was fulfilled. In a Continuous Activated Sludge study 99.994% removal was observed after 63 days. Chemical analysis confirmed that removal was predominantly by biodegradation (99.811%). 0.198% removal occurred via sorption to sludge. The studies demonstrate that the substance is readily biodegradable and complete biodegradation occurs in biological wastewater treatment plants. The substance is also likely to be degraded under anaerobic conditions although at a lower rate than compared to the degradation under aerobic conditions.

 

Bioaccummulation

The substance is expected to have a low bioaccumulation potential based on the low log Kow. The measured Log Kow is reported as 1.53.

 

Transport and distribution

The adsorption coefficient (Kd) of the substance has been determined in a HPLC study according to OECD TG 121 (GLP, reliability1). Log Kd was reported as -0.26. This value corresponds to log Koc of 1.94.