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EC number: 942-710-1
CAS number: -
Table 1. Influence
of test item on oxygen consumption of activated sludge
Conc. of test item in test mix
Total oxygen consumption rate (RT)
Specific respiration rate (RS)
(measured in the Laboratory)*
Variation coefficient of O2 consumption rate (%)
Individual pH values of the BOD flasks, except TI1-3, where the average
values are reported
/ Maximum temperature (°C) measured in the Laboratory, during the
using the procedures outlined in the CiToxLAB Study Plan for 16/375-27AS
and OECD 209 (OECD, 2010). The results of this OECD 209 test for CJ302
show that all validity criteria were met. The 3-hour EC50 of CJ302 was
greater than 1000 mg/L.
EC50 of CJ302 was greater than 1000 mg/L (OECD TG 209).
specific respiration rate of the blank controls was greater than 20 mg
O2/L/h/g solid and the variation coefficient of oxygen uptake rate in
above untreated replicates was not more than 30 %. The 3-hour EC50 of
positive control substance (3,5-Dichlorophenol) was calculated to be in
the range between 2 and 25 mg/L. All test validity criteria were met.
Based on the results of this study, CJ302 had no inhibition effect on
the total respiration rate of the microorganisms of the activated sludge
at 1000 mg/L. No further testing is necessary. Therefore, the 3-hour
EC50 of CJ302 was greater than 1000 mg/L.
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