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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

Depending on local conditions and existing concentrations, disturbances in the biodegradation process of activated sludge are possible.

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The toxicity of N-vinylformamide to microorganisms was tested in three different studies. Two tests were performed according to DIN 38412 part 8 focusing on the growth inhibition induced by the substance in Pseudomonas putida. After 17 hours of exposure EC10 -values of 19.1 and 22 mg/L were determined respectively. The respiration inhibition of industrial activated sludge by the test substance was determined in a guideline study according to OECD 209. An EC20 >1000 mg/L was detected after 30 minutes (BASF AG, 1988). Since the short term respiration test was performed with industrial sludge, the EC10 of 19.9 mg/L determined using Pseudomonas putida as test organism was used for PNEC calculation.