Registration Dossier
Registration Dossier
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EC number: 248-704-9 | CAS number: 27871-49-4
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.29 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 2.9 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.029 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 100 mg/L
- Assessment factor:
- 10
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 1 073 µg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 107.3 µg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 44.47 µg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Methyl (S)-lactate has a low potential for adsorption to soil, is readily biodegradable and is rapidly hydrolysed to lactic acid and methanol in vivo. Modelled effect concentrations in acute aquatic toxicity studies with fish, daphnids and algae were higher than the highest recommended test concentrations of 100 mg/L. PNECs were calculated on the basis of the lowest modelled LC50 of 290 mg/L (fish, 96 h).
Conclusion on classification
Methyl (S)-lactate has a low potential for adsorption to soil, is readily biodegradable and is rapidly hydrolysed to lactic acid and methanol in vivo. Modelled effect concentrations in acute aquatic toxicity studies with fish, daphnids and algae were higher than the highest recommended test concentrations of 100 mg/L. Toxicity to microorganisms will not occur. Toxicity to microorganisms are not to be expected as demonstrated with a test performed with the read-across partner ethyl (S)-lactate and due to the biodegradability of methyl (S)-lactate.
Therefore, methyl (S)-lactate is not classified for environmental hazards.
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