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EC number: 203-466-5
CAS number: 107-13-1
The data overall suggest that acrylonitrile, while having an initial inhibitory effect on microorganisms, is of relatively low toxicity at concentrations below 100 mg/l.
Results of biodegradation testing shows that acrylonitrile has an
initial inhibitory effect on non-acclimated microorganisms, but
following acclimation EC50s for microorganisms are generally in excess
of 100 mg/l. The results of microbial toxicity tests and biodegradation
studies on acrylonitrile indicate a potential effect on microorganisms
in wastewater treatment plants, at least on start-up. The reported EC50s
range from 1- >1,800 mg/l. Results with acclimated microbial populations
and in simulation tests have indicated no inhibitory effect of
acrylonitrile at levels as high as 200 mg/l, and a conservative estimate
of 50 mg/l for a NOEC in such populations has been assumed (EU RAR 2004).
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