Registration Dossier

Diss Factsheets

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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