Registration Dossier
Registration Dossier
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EC number: 209-062-5 | CAS number: 554-13-2
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 9 mg/L
- Assessment factor:
- 1
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.3 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.9 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 122.2 mg/L
- Assessment factor:
- 1
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 238.4 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 23.84 mg/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:
- 44.11 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Upon contact with water lithium carbonate hydrolyses and lithium hydroxide and lithium hydrogen carbonate are formed. These substances then further degrade to produce carbonate and lithium ions. PNECs were derived from most sensitive species of each compartment/ endpoint and values for Li2CO3 and lithium ion were shown.
Derivation of PNECs for Li2CO3
For Li2CO3 the PNECs derived for lithium were corrected as follows:
PNEC (Li2CO3) = PNEC (Li) x (M(Li2CO3) / (M(Li))
The molecular weight for Li2CO3 is 74.89 g/mol.
The atomic weight for Li is ca. 6.94 g/mol, and should be multiplied where > 1 Li molecule is present.
PNEC (Li2CO3) = PNEC (Li) x (74.89 / [2*6.94])
The updated PNECs for sediment and soil have not yet been integrated in the risk assessment calculation. An update of the CSR is planned for November 2020.
Conclusion on classification
Based on the available data lithium carbonate was not classified and labelled according to Regulation (EC) No. 1272/2008 (CLP). Chronic toxicity NOECs are > 1 mg/L and lithium carbonate has no potential to bioaccumulate.
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