Registration Dossier
Registration Dossier
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EC number: 914-172-8 | CAS number: -
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
Experimental data on the chronic toxicity of the reaction mass of calcium bis(dihydrogenorthophosphate) and calcium hydrogenorthophosphate are not available. It is not acutely toxic to aquatic organisms and has no potential to bioaccumulate in organisms. Therefore a long-term toxicity of the substance to aquatic invertebrates is not anticipated. On contact with water substance will dissociate to phosphate and calcium ions. Both are ubiquitous in the environment and are essential micronutrients for organisms. Calcium and phosphorus are vital components of the exoskeleton of many aquatic invertebrates. Thus, growth and reproduction are affected by the availability of these micronutrients (Hessen et al. 2000; Tan and Wang, 2009).
A chronic toxicity of the substance is not anticipated due to the lack of acute toxicity and the fact that calcium and phosphate are essential micronutrients for aquatic invertebrates.
References:
Hessen et al. (2000) Calcium limitation in Daphnia magna. Journal of Plankton Research (22), 553–568.
Wang and Tan (2009) Calcium influence on phosphorus regulation in Daphnia magna: implications for phosphorus cycling. Aquatic Biology (5), 1-11
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