Registration Dossier

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
5.85 µg/L
Assessment factor:
3
Extrapolation method:
sensitivity distribution
PNEC freshwater (intermittent releases):
12 µg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
3.72 µg/L
Assessment factor:
3
Extrapolation method:
sensitivity distribution

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
3 285 µg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
18 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
11.6 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:
0.22 mg/kg soil dw
Assessment factor:
10
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
2.19 mg/kg food
Assessment factor:
1

Additional information

Further details of the PNEC derivation are explained in the attached document.

The molecular weight of sodium selenite is 172.94 g/mol, for selenium 78.96, a conversion factor of 2.19 has to be applied therefore for the PNECs of selenium as elemnt.

Conclusion on classification