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EC number: 943-537-4
CAS number: -
The effect of the test item on the respiration of activated sewage sludge gave a No Observed Effect Concentration (NOEC) after 3 hours exposure of 125 mg/L (OECD 209).
study was performed to assess the effect of the test item on the
respiration of activated sewage sludge. The method was designed to be
compatible with OECD Guidelines for Testing of Chemicals (2010) No 209
"Activated Sludge, Respiration Inhibition Test (Carbon and Ammonium
a preliminary range-finding test and two initial experiments, activated
sewage sludge was exposed to an aqueous dispersion of the test item at
concentrations of 125, 250 and 500 mg/L (5 replicates of each) for a
period of 3 hours at a temperature of approximately 20°C
with the addition of a synthetic sewage as a respiratory substrate.
The effect of the test item on the
respiration of activated sewage sludge gave a No Observed Effect
Concentration (NOEC) after 3 hours exposure of 125 mg/L. The reference
item gave a 3 -hour EC50 value of 7.4 mg/L (95 % confidence limits 5.8
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