Registration Dossier
Registration Dossier
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EC number: 208-655-6 | CAS number: 537-01-9
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Thus, the 3-hour NOEC of dicerium tricarbonate to activated sludge microorganisms was at the limit of water solubility of dicerium tricarbonate under the test conditions, or at 1000 mg/L. The 3-hour EC20, EC50 and EC80 were clearly higher than the limit of water solubility of dicerium tricarbonate under the test conditions, or higher than 1000 mg/L.
The test item has no toxic effect on the respiration rate of activated sludge microorganisms at the limit test concentration of 1000 mg/L.
Key value for chemical safety assessment
Additional information
An experimental study, scored as Klimisch 1 (Grützner, 2006), was selected as a key study; showing no toxic impact on the respiration rate of activated sludge micro-organisms up to the highest concentration tested (i.e. 1000 mg/L)
Cerium carbonate is not toxic for microorganisms.
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