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EC number: 212-039-2
CAS number: 753-73-1
Key study: Roulstone (2013): The effect of the test item on the respiration of activated sewage sludge gave a 3-Hour EC50 value of 79 mg/L.
A study was performed to assess the effect of the test item on the
respiration of activated sewage sludge. The method followed was designed
to be compatible with the OECD Guidelines for Testing of Chemicals
(2010) No. 209 "Activated Sludge, Respiration Inhibition Test (Carbon
and Ammonium Oxidation) ". The study was conducted in accordance with
GLP and was assigned a Klimisch reliability score of 1.
The effect of the test item on the respiration of activated sewage
sludge gave a 3-Hour EC50 value of 79 mg/L. Using the methods available,
it was not possible to calculate 95% confidence limits from the data
It was not possible to determine a No Observed Effect Concentration
(NOEC). The Lowest Observed Effect Concentration (LOEC) after 3 hours
exposure was 3.2 mg/L.
The Kungolos et. al (2004) study is brief and not conducted in a method
resembling a recognised guideline.
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