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EC number: 232-092-5
CAS number: 7786-17-6
NOEC 1000 mg/L, EC50 > 1000 mg/L (loading rate), OECD 209, EU Method C. 11 and ISO 8192, Desmares-Koopmans 2013.
In the key study (Desmares-Koopmans, 2013) toxicity to microorganism was
determined in an activated sludge respiration test conducted under GLP
conditions and in accordance with standardised guidelines. Activated
sludge of a predominantly domestic sewage treatment plant was exposed to
the test material at a loading rates of up to 1000 mg/L for 3 hours
under static conditions. Oxygen consumption was measured to determine
the rate of respiration, where inhibition was determined relative to the
The test material was not completely soluble in test medium, test
concentrations were therefore expressed as loading rates initially
Under the conditions of this test, the test material was not toxic to
waste water (activated sludge) bacteria at loading rates up to 1000
mg/L. Therefore the NOEC was determined to be 1000 mg/L and the EC50 is
considered to exceed a loading rate of 1000 mg/L.
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