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Toxicity to microorganisms

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Description of key information

18h NOEC (Pseudomonas putida) = 550 mg/L (growth inhibition)

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
550 mg/L

Additional information

One reliable study with Pseudomonas putida is available for C16-18AS Na (CAS 68955-20-4). The key study (Steber 1988) followed the procedure of cell multiplication inhibition test according to Bringmann and Kühn (1977). The growth inhibition of Pseudomonas putida was recorded after 18 hours of exposure to the test substance. The NOEC value was determined to be 550 mg a.i./L (nominal concentration). This value was used for PNEC STP derivation for C16-18AS Na (CAS 68955-20-4).