Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
1.6 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
11 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

Sodium lactate fully dissociates into Na+ ions and lactate. The ecotoxicology of sodium lactate can be understood in terms of the ecotoxicology of lactic acid. molar ratio to convert from lactic acid by weight to sodium lactate by weight is 1.24.

Lactic acid is a ubiquitous and essential molecule of life; acute effects, as well as (external) long-term effects are most likely the results of physical processes (pH-effect; electrostatic effects). Chronic effects are not relevant in the context of risk assessment. PNECs are derived based on the acute effects. PNECs are below the chronic no-effect levels, insofar available.

Conclusion on classification

Sodium lactate fully dissociates into Na+ ions and lactate. The ecotoxicology of sodium lactate can be understood in terms of the ecotoxicology of lactic acid. molar ratio to convert from lactic acid by weight to sodium lactate by weight is 1.24.

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.

Lactic acid does not have to be labeled for environmental effects, and no short or long-term effects are expected for any exposure levels that do not lower the pH to unacceptable levels. As such no relevant hazards are foreseen.