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EC number: 241-727-5
CAS number: 17736-08-2
EC50 (48 h) = 0.588 mg a.i./L (geometric mean measured, OECD 202,
There is one study available which assessed the short-term
toxicity of (Z)-N-methyl-N-(1-oxo-9-octadecenyl)glycine, compound with
2,2',2''-nitrilotri(ethanol) (1:1) (CAS 17736-08-2) to aquatic
invertebrates according to the OECD guideline 202 and GLP.
In a static test, Daphnia magna was exposed to five WAFs with
nominal loading rates of 0.10, 0.32, 1.0, 3.2, and 10 mg a.i./L for 48
h. All test solutions were clear and. Test item concentrations were
analytically verified by UPLC at the start (0 h) and at the end of the
test (48 h).
The measured test item concentrations at the start of the test
were 0.066, 0.27, 0.98, 2.3 and 6.7 mg a.i./L in the WAFs prepared at
0.10, 0.32, 1.0, 3.2 and 10 mg ai.i./L, respectively. The highest four
concentrations (10, 3.2, 1.0 and 0.32 mg/L) decreased to 39 – 85% of the
initial concentrations by the end of the test at 48 h. The lowest
concentration (0.10 mg/L) decreased below the LOQ. Therefore, the
exposure concentrations were expressed as geometric means of the
measured concentrations, assuming the calculated values 0.026, 0.23,
0.61, 2.1 and 5.2 mg a.i./L.
After 48 h ≥ 60% of the daphnia exposed to the test item
concentrations of 0.61 mg a.i./L and higher were immobilized, resulting
in an EC50 (48 h) of 0.588 mg a.i./L (geometric mean measured).
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