Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

With high probability acutely not harmful to aquatic algae

Key value for chemical safety assessment

Additional information

In a test with green algae (Scenedesmus subspicatus), the 72-hr ErC50 (growth rate) was calculated to be 48.7 mg/L [BASF AG, 1987]. In this study, the test solution was not buffered, resulting in low pH in the test solution. Aqueous solutions of calcium propionate do not display significant changes in pH and are therefore less toxic to aquatic organisms. For calcium propionate the 72-hr ErC50 for green algae (Scenedesmus subspicatus) is >500 mg/L [BASF AG, 1989]. The analogous substance was chosen in order to avoid the pH dependent effect of pure propionic acid solution.