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EC number: 285-206-0 | CAS number: 85049-36-1
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
According to Regulation (EC) No. 1907/2006, Annex IX, Column 2,
9.1.6, the testing of the long-term toxicity to aquatic invertebrates is
not required.
The substance Fatty acids, C16-18 and C18-unsatd., ethyl esters (CAS
85049-36-1) is readily biodegradable and poorly soluble in water (< 0.05
mg/L). Due to these characteristics, extensive elimination of the
substance in conventional STPs can be expected. Therefore, only low
concentrations, if any, are likely to be released into the water phase.
Exposure of aquatic organisms is thus expected to be low. Furthermore,
read across data on short-term toxicity available for all three trophic
levels (fish, daphnia and algae) indicate a low potential for aquatic
toxicity. Available data on the structurally similar substance Fatty
acids, C16-18 and C18-unsaturated isobutyl esters (CAS 84988-79-4)
determined no chronic toxicity up to the limit of the water solubility
of the substance. The long-term toxicity of Fatty acids, C16-18 and
C18-unsaturated isobutyl esters (CAS 84988-79-4) was performed according
to OECD guideline 202 part II and GLP (Wierich, 1995). The test organism
Daphnia magna was exposed to the test substance in a semi-static system
for 21 days, at loadings of 1 and 100 mg/L. The test solutions were
prepared as water accommodated fractions (WAF). At 1 mg/L no mortality
and no significant effect on reproduction was observed. At 100 mg/L
reproduction was significantly increased compared to the control. Thus,
the test substance had no negative effects on reproduction at the tested
concentrations, and the NOELR is reported to be ≥ 100 mg/L. Thus no
chronic toxicological effects on aquatic invertebrates are expected up
to the limit of water solubility for Fatty acids, C16-18 and
C18-unsatd., ethyl esters (CAS 85049-36-1).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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