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Ecotoxicological information

Long-term toxicity to fish

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Description of key information

Fatty acids, C18-unsaturated, trimers (CAS No. 68937-90-6) is expected to show no chronic effects up to the limit of the water solubility (<0.37 mg/L). The NOEC (28 d) was determined to be > 0.850 mg/L.

Key value for chemical safety assessment

Additional information

One study investigating the long-term toxicity of Fatty acids, C18-unsaturated, dimers, hydrogenated (CAS No. 68783-41-5) to freshwater fish was used as read across to Fatty acids, C18-unsaturated, trimers (CAS No. 68937-90-6) in accordance with Regulation (EC) No. 1907/2006, Annex XI, 1.5.

This long-term toxicity test conducted in accordance with GLP and ISO/DIS 10229-1 using the fresh water fish Danio rerio reports a NOEC (28 d) of ≥ 0.850 mg/L and concludes that there are no effects up to the limit of the water solubility of the tested substance (Marshall, 1994). Due to the low water solubility of the test substance a vehicle (DMSO) was used. Continuously flowing test solutions were generated from a constant-head tank containing dilution water and from a series of stocks, which were dosed into the test vessels via a peristaltic pump.

Due to structural and property similarities of the tested category member this result also applies to Fatty acids, C18-unsaturated, trimers (CAS No. 68937-90-6). No effects for long term toxicity to fish (NOEC) can be concluded up to the the water solubility limit (< 0.37 mg/L).