Registration Dossier
Registration Dossier
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EC number: 232-146-8 | CAS number: 7789-18-6
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
In this 48-hour acute toxicity test with Daphnia magna the 48 h EC50 value was determined to be 98.4 mg/L, and the 48 h NOEC was determined to be 76.9 mg/L. The results are based on the nominal test item concentrations.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 98.4 mg/L
Additional information
Acute toxicity on Daphnia magna over an exposure period of 48 hours in a static system was assessed according to OECD Guideline 202 and EU method C.2. Five different concentrations of cesium nitrate arranged in a geometric series and an untreated control group was tested in the main experiment. The nominal concentrations were: 35.0; 45.5; 59.2; 76.9 and 100.0 mg/L. The 48 h EC50 value was determined to be 98.4 mg/L, and the 48 h NOEC was determined to be 76.9 mg/L.
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