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EC number: 281-897-8
CAS number: 84057-80-7
With high probability acutely not harmful to aquatic algae
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.
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