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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Description of key information

Medium hardness water contains typically 100 mg/l carbonate; a limiting factor to health of auatic organisms will be raised pH at extremely high concentrations and imbalance of micro-nutrients and other metals.  

Key value for chemical safety assessment

Additional information

The substance dissociates in water producing sodium, carbonate and bicarbonate ions. All of them originally exist in nature, and their concentrations in surface water are dependent on various factors, such as geological parameters, weathering and human activities. Therefore, there is a continuous source of such ions into the environment and they all have been measured extensively in aquatic ecosystems.