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EC number: 221-130-6
CAS number: 3010-02-4
Depending on local conditions and existing concentrations, disturbances in the biodegradation process of activated sludge are possible.
The toxicity of diethylaminoacetonitrile
(CAS 3010 -02 -4) was studied in a GLP guidline study according to OECD
209 using activated sludge from a laboratory wastewater plant treating
municipal and synthetic sewage (BASF AG, 1990; report no. 99/0050/08/1).
The 30 -min EC20 was determined to be 0.38 mg/L, the EC50 was 2.5 mg/L
(nominal). After an extension of the exposure to 3 h, the effect values
had changed only slightly (EC20 = 0.34 mg/L, EC50 = 3.2 mg/L, nominal).
This result is supported by two studies
according to the method of Bringmann and Kuehn (German Industrial
Standard DIN 38412, part 8, draft) using Pseudomonas putida as test
organism. The 17 -h EC10 was 0.32 mg/L and the EC50 1.04 mg/L (nominal;
BASF AG, 1989; report no. 9/1890473/w).
Two short-term respiration tests using
activated sludge from a wastewater treatment plant receiving industrial
sewage resulted in EC20 values above a critical value of 100 mg/L (BASF
It can be concluded that depending on local
conditions and existing concentrations, disturbances in the
biodegradation process of activated sludge are possible. However, the
inhibition of the degradation activity of activated sludge in adapted
wwtps (industrial) is not anticipated when introduced in low
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