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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Calcium lactate fully dissociates into Ca2+ ions and lactate. The ecotoxicological effects of lactate in the environment can be understood in terms of the ecotoxicological effect of lactic acid. Calcium ions - i.e. simple calcium salts, are non-toxic. 
Lactic acid is practically nontoxic to algae. This is an additional indication that the short-term effects observed for fish and daphnids are of a physical nature, since algae are less sensitive to pH effects than (especially) fish.

Key value for chemical safety assessment

EC50 for freshwater algae:
3 390 mg/L
EC10 or NOEC for freshwater algae:
2 300 mg/L

Additional information

Calcium lactate fully dissociates into Ca2+ ions and lactate. The ecotoxicological effects of lactate in the environment can be understood in terms of the ecotoxicological effect of lactic acid. Calcium ions - i.e. simple calcium salts, are non-toxic.

Lactic acid is practically nontoxic to algae. This is an additional indication that the short-term effects observed for fish and daphnids are of a physical nature, since algae are less sensitive to pH effects than (especially) fish.