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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Description of key information

Bioaccumulation in organisms is negligible, due to biotransformation and excretion of alcohol ethoxylates.

Key value for chemical safety assessment

Additional information

In a publication on the bioconcentration of alkylethoxylates Tolls et al. (2000) reported BCF-values ranging from <5 to 387.5 whereas uptake rates varied from 330 to 1660 (L x kg/d) and elimination rates varied from 3.3 to 59 per day. The authors stated that the time of steady state and the BCF for AE increase with increasing chain length of alkyl chain and decreasing length of the ethoxylate chain. The alcohol ethoxylates with alkyl-chain length comparable to the given substance are C12EO8 and C14EO4. For this alcohol ethoxylates Tolls et al. (2000) reported BCF-values of 12.7 and 237 L/kg.