Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Long-term toxicity to aquatic invertebrates

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

A NOEC of 1.0 mg/L was observed for cesium potassium fluoroaluminate in a 21-day reproduction study with Daphnia magna.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
1 mg/L

Additional information

A GLP-compliant semi-static reproduction toxicity test with Daphnia magna was conducted according to OECD 211 as part of a new chemical substance notification in China.

Based on the results of range-finding test, eight treatment groups and one control group were included in the definitive test. Ten Daphnids, individually held were tested for each concentration and the test duration was 21 days. The mortalities of the parent animals in treatment groups varied from 10-20% at the end of the test. The mean number of live offspring produced per parent animal surviving at the end of the test in control group was 106, the coefficient of variation was 16.3%. Hence, the test was considered to be valid. The results showed that based on nominal concentrations, the NOEC for Daphnia magna reproduction was 1.0 mg/L and LOEC was 1.39 mg/L. The EC50 was 4.51 mg/L (95% CI of 4.03-4.83 mg/L).