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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Description of key information

RA (CAS 102-81-8)_NITE-2002_OECD 305C: BCF > 39

Key value for chemical safety assessment

BCF (aquatic species):
39 dimensionless

Additional information

There are no studies on bioaccumulation available for Butyldiethanolamine. Therefore, the data on its structural analogue Dibutylethanolamine (DBEA, CAS 102 -81 -8) is taken to evaluate this endpoint (please refer also to read-across statement attached in IUCLID Section 13).

The bioaccumulation in fish for the read-across substance Dibutylethanolamine (CAS 102 -81 -8) was experimentally determined according to OECD Guideline 305 C (NITE, 2011). The test organisms (Cyprinus carpio) were exposed to the test substance in nominal concentrations of 0.2 and 0.02 mg/L for 28 days, respectively. In this freshwater flow-through test, a renewal rate of 200-800 mL/min for the test solution was assured in the test vessels (glass tanks of 100 liters in volume). 15 - 20 test organisms were exposed to the test substance per vessel. The lipid content of the organisms was measured at the beginning (4.5 %) and the end of exposure (4.8 %). For the test concentration of 0.2 mg/L, a steady-state BCF of < 5 was determined. The substance concentration of 0.02 mg/L resulted in a steady-state BCF of < 39.

In addition, the aquatic bioaccumulation of Butyldiethanolamine was estimated based on software tool EPIWIN (BCFBAF, v.3.01) of US-EPA (Chemservice S.A., 2015). The calculated BCF of 3.16 L/kg wet-wt confirms the lack of bioaccumulation potential.