Registration Dossier
Registration Dossier
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EC number: 500-075-4 | CAS number: 31694-55-0 1 - 6.5 moles ethoxylated
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Inhibition of activated sludge activity is not anticipated when introduced in appropriate low concentrations
Key value for chemical safety assessment
- EC10 or NOEC for microorganisms:
- 640 mg/L
Additional information
Toxicity to bacteria was tested according to GLP and OECD guideline 209 using domestic activated sludge as inoculum. After 180 minutes of exposure an EC10 of 640 mg/L was found while the EC50 was estimated to be > 1000 mg/L, related to the nominal concentration (BASF 2011). These results are substantiated by another study according to Bringmann-Kuehn (BASF 9/1891315, 1989) and by three read-across studies on microorganisms (Bayer 2003, Shell 1999 and DOW Europe 1992).
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