Registration Dossier

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

A 48 -h Acute Toxicity study in Daphnia magna was performed with SrHPO4 according to OECD 202 and in compliance with GLP principles. The test substance solution was prepared as a water soluble fraction of a loading rate of 100 mg/L. Preparation started with a loading rate of 100 mg/L applying a 2-day period of magnetic stirring followed by a filtration through a 0.45 µm membrane filter. The lower test concentrations were prepared by subsequent dilutions of this WSF in test medium. The actual measured concentration was 1.5 and 14 mg Sr/l at the start of the test in the solution containing 10% and the undiluted WSF prepared at a loading rate of 100 mg/l, respectively. The concentrations remained stable during the exposure. The concentration obtained in the undiluted WSF was considered the maximum soluble concentration in the test medium. No substance related effects were observed in any of the groups tested, up to the WSF prepared at 100 mg/L. The 48h-EC50 was considered to exceed the maximum solubility of the test substance in medium.

Key value for chemical safety assessment

Additional information

Key value for CSA: 48h-EC50 is > the maximum solubility of the test substance in medium