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EC number: 411-370-1
CAS number: 82857-68-9
GM 102 E
In a GLP compliant test performed according to OECD guideline 209, the test item showed significant inhibitory effects on activated sludge after 3 hours of exposure at concentrations from 1 to 320 mg/L.
influence of GM102E on the respiration rate of activated sludge was
investigated after a contact time of 3 hours according to OECD guideline
No. 209 and in compliance with GLP.
test was performed based on the result of a preceding combined
limit/range-finding test. Six concentrations, ranging from 1.0 to 320
mg/l, increasing with a factor 3.2 were tested with five replicates per
concentration and six replicates for an untreated control group.
positive control, the reference item 3,5 -dichlorophenol was tested
under identical test conditions, at concentrations of 2.0, 5.0 and 12
mg/l. The EC50 of 3,5-dichlorophenol was in the accepted range of 2 to
25 mg/l for total respiration which showed a normal sensitivity of the
toxic to the micro-organisms at all concentrations tested. The
inhibitory effect of GM102E on aerobic waste water (activated sludge)
bacteria increased with increasing concentration, ranging from 13%
inhibition at 1.0 mg/l to 80% at 320 mg/l.
NOEC and ECx nominal values were as follows:
EC10 = 0.65
EC20 = 2.5
EC50 = 33
deviations were observed but they didn’t influence the validity of the
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