Registration Dossier
Registration Dossier
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EC number: 939-396-3 | CAS number: -
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
An activated sludge respiration inhibition test was performed according to OECD Guideline 209 with GLP compliance.
The EC50 of the test substance for activated sludge after 3 hours contact time was determined to be 156 mg/L.
The EC10, EC20 and EC80 were 38, 61 and 395 mg/L, respectively. The test substance is therefore considered not harmful to activated sludge.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 156 mg/L
- EC10 or NOEC for microorganisms:
- 38 mg/L
Additional information
An activated sludge respiration inhibition test was performed (with an incubation period of 3 h) according to OECD Guideline 209 with GLP compliance and with the following test concentrations: 18.1, 36.2, 72.5, 145.0, 289.9 and 579.8 mg/L. The test is valid and the inhibition percentage of the test substance was 5, 6, 7, 48, 73 and 92 at 18.1, 36.2, 72.5, 145.0, 289.9 and 579.8 mg/L, respectively.
The EC50 of test substance for activated sludge after 3 hours contact time was determined to be 156 mg/L with 95% confidence limits of 65 and 808 mg/L. The EC10, EC20 and EC80 were 38, 61 and 395 mg/L, respectively. The test substance is therefore considered not harmful to activated sludge.
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