Registration Dossier
Registration Dossier
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EC number: 212-090-0 | CAS number: 761-65-9
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The inhibition of the degradation activity of activated sludge is not anticipated when the substance is introduced in appropriately low concentrations
Key value for chemical safety assessment
Additional information
The inhibitory effect of N,N-dibutylformamide has been investigated in three studies. The effect of respiration activity of activated sludge from a domestic sewage treatment plant was investigated in two studies following ISO 8192, (BASF AG, 1989). The (3 h) EC20 test value was determined to be greater than 750 mg/L, therefore the lower concentrations were taken and the test procedure was repeated. As result, the (3 h) EC20 value was greater than 500 mg/L.
Additionally, in an oxygen consumption test using Pseudomonas putida (ROBRA test) an EC10 of 1580 mg/L was determined (BASF AG, 1989; 89/0729).
It can be concluded, that the inhibition of the degradation activity of activated sludge is not anticipated when the substance i introduced in appropriately low concentrations.
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