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EC number: 941-731-3
CAS number: -
Validity criteria of the study
The percentage of immobilisation should be ≤ 10 %. In this study the control immobilisation was 0 %.
The dissolved oxygen concentration at the end of the test should be ≥ 3 mg/L in all test units. In this test, the dissolved oxygen concentration at the end of the test was ≥ 8.2 mg/L.
EL50 and NOELR-values of daphnids exposed to the test item evaluated using nominal loading rates
95 % confidence limit of EL50
37.8 – 56.7
EC50 and NOEC-values of daphnids exposed to the test item evaluated using actual test item concentrations
95 % confidence limit of EC50
The measured content of test item was between 1 % and 14 % of nominal in the fresh samples with a mean initial concentration of 5 % of nominal. In the aged samples the measured content was between 3 % and 12 % of nominal with a mean measured concentration of 7 % of nominal.
48–hr-acute toxicity of LYSO toDaphnia Magnawas studied
under semi- static conditions. Test species were exposed to control and
test chemical at nominal concentration of 100, 45.5, 20.7, 9.39, 4.27
mg/L for 48 hr. Immobilisation and sublethal effects were observed
daily. The 48– hour EL50 was 46.3 mg/L
(nominal). The 48 – hr NOELR based on immobilization was 20.7 mg/L
study is classified as acceptable and satisfies the guideline
requirements for an acute toxicity study with freshwater invertebrates.
Organism Age (e.g. 1st instar): <24 hr
Type (Flowthrough, Static, Static Renewal): Semi-static
Summary of biological results
The toxicity of LYSO was assessed in a
48-hr acute toxicity test with Daphnia magna according to OECD
test guideline 202 and under GLP. According
to the results of the test, the EL50(48 h) was determined to
be 46.3 mg/L (nominal). The corresponding NOELR (48 h) was
20.7 mg/L (nominal).
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