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EC number: 247-426-5
CAS number: 26040-51-7
In order to test the toxicity to microorganism of the substance,
activated sludge from predominantly domestic sewage plant was exposed to
the test solution of three nominal concentrations of the substance (10,
100, and 1000 mg/L), blank control solution and solution with positive
reference substance for a period of 3 hours. Dissolved oxygen was
recorded and respiration rates were calculated. No physico-chemical
oxygen consumption was observed at the highest concentration of test
substance. No respiration inhibition was observed at 10, 100 and 1000
mg/L (EC10 and EC50 > 1000 mg/L). This toxicity study is classified as
acceptable and satisfies the guideline requirements for the toxicity
study to microoragnisms.
The test item showed 0.0 % respiration inhibition of activated sludge at the highest test item concentration of 1000 mg/L. An 3h-EC10 and an 3h-EC50 of >1000 mg/l were obtained in this test.The effect values relate to nominal concentration, since no analytical monitoring was performed.
"should read: EC10 >1000 mg/L"
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