Registration Dossier
Registration Dossier
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EC number: 200-018-0 | CAS number: 50-21-5
Endpoint summary
Administrative data
Description of key information
In short-term toxicity tests on lactic acid in three different fish species mortality was observed resulting in estimated LC50values ranging between 130 and > 320 mg/L (nominal) which can be attributed to a pH effect. Lactate as such is considered not to exert any systemic effects on fish in the tested concentration range of up to 560 mg/L.
Furthermore, in several short-term toxicity tests of lactic acid in water fleas, immobilisation was observed resulting in estimated EC50values ranging between 130 and 750 mg/L (nominal) which can again be attributed to a pH effect. Lactate as such is considered not exert any systemic effects on daphnids in the tested concentration range of up to 750 mg/L.
Lactic acid is practically non-toxic to algae, with a NOEC of >533 mg/L (TWA).
Lactic acid is furthermore not inhibitory to respiration of activated sludge at a limit test concentration of 88.2 mg/L. Therefore, no hazard is identified.
Additional information
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