Registration Dossier
Registration Dossier
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EC number: 277-761-2 | CAS number: 74196-18-2
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
IC50 (3 h, activated sludge bacteria) = 2200 mg/l (nominal)
Key value for chemical safety assessment
- EC50 for microorganisms:
- 2 200 mg/L
Additional information
The inhibitory effect of the test item on aerobic waste-water bacteria was investigated in a respiration inhibition test, according to ETAD 103 (1979), a method comparable to the OECD Guideline 209 (1984). Activated domestic sludge bacteria, fed with a standard amount of synthetic feed, was exposed to 560, 1000, 1800, 3200 and 5600 mg/l and two negative controls for a total of 3 hours. The oxygen concentration was measured after 3 hours and used to calculate the amount of inhibition. No reference substance was tested.
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