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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

Sodium and carbonate ions are tolerated by fish at high concentrations
At high concentrations of carbonate, pH may have an impact on fish vitality.

Key value for chemical safety assessment

Additional information

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

BICARBONATE summary:

In a 96-hr acute flow-through test with rainbow trout (Oncorhynchus mykiss) a NOEC of 2,300 mg/l and a LC50 of 7,700 mg/l were determined. The test was conducted under GLP conditions and according to FIFRA Guideline Reference number 72-1. In a 96-hr acute flow-through test with bluegill sunfish (Lepomis macrochirus) a NOEC of 5,200 mg/l and a LC50 of 7,100 mg/l were determined. The test was conducted under GLP conditions and according to FIFRA Guideline Reference number 72-1.