Registration Dossier
Registration Dossier
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EC number: 914-147-1 | CAS number: -
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The purpose of this study was to determine the effect of the test item on bacteria according to the OECD guideline 209 “Activated Sludge, Respiration Inhibition Test”.The effect is assessed by measuring the micro-organisms respiration rate on a sample of activated sludge during an incubation period of 3 hours.The method was applied with respect to the following criteria:
The difference between the 2 controls was below 15 %;
EC50of the control test with the reference item 3,5-dichlorophenol was between 5 and 30 mg/l (11 mg/L);
The tested substance did not show any effect on the respiration of activated sludge in the conditions of the test up to a concentration of 500 mg/L.
Key value for chemical safety assessment
- EC10 or NOEC for microorganisms:
- 500 mg/L
Additional information
The purpose of this study was to determine the effect of the test item on bacteria according to the OECD guideline 209 “Activated Sludge, Respiration Inhibition Test”.
The effect is assessed by measuring the micro-organisms respiration rate on a sample of activated sludge during an incubation period of 3 hours.
The method was applied with respect to the following criteria:
The difference between the 2 controls was below 15 %;
EC50of the control test with the reference item 3,5-dichlorophenol was between 5 and 30 mg/l (11 mg/L);
The tested substancedid not show any effect on the respiration of activated sludge in the conditions of the test up to a concentration of 500 mg/L.
EC50– 3h (mg/L) |
||
|
Value |
95 % CI* |
3,5-Dichlorophenol |
11 |
3.1 - 57 |
item |
> 500 |
ND |
*CI: Confidence Interval
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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