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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Key value for chemical safety assessment

EC50/LC50 for freshwater algae:
5.84 mg/L

Additional information

The toxicity of CAHC can be described to the pH increase due to the addition of OH-, as the calcium and aluminum concentrations are too low to explain the effects. The toxicity of CAHC is depending inthe composition of the test waters, especially the buffer capacity of the water.

Thus, in real aquatic departments the LC50 of CAHC should be much greater than 10 mg/l.