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Exposure of Daphnia magna to the test item resulted in significant mortalities at the test concentration of 1.5 mg/L resulting in 100% mortalities by Day 5.

The 21-Day EC50 (immobilization) value, based geometric mean measured concentrations, for the parental daphnia generation (P1) was calculated to be 1.0 mg/L. Due to the nature of the data, no confidence limits could be determined.

The 21-Day EC50 (reproduction) based on geometric mean measured concentrations was 0.56 mg/L. Due to the nature of the data, no confidence limits could be determined.

The "Lowest Observed Effect Concentration" (LOEC) and the "No Observed Effect Concentration" (NOEC) based on geometric mean measured concentrations were 0.52 and 0.15 mg/L respectively.

The Chronic Value (ChV) was determined to be 0.28 mg/L.

The effect of the test itme on the growth of Pseudokirchneriella subcapitata has been investigated and gave EL50 values of greater than 100 mg/L loading rate WAF. The No Observed Effect Loading Rate was 100 mg/L loading rate WAF.

Additional information