Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
1.35 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.91 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.14 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.53 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:
0.265 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

For the calculation of the partition coefficients with EUSES a Log Pow of -1 was used as input parameter.

PNEC freshwater and marine water sediment

K_(susp-water) = 0.979

RHO_(susp) = 1150

Conversion factor (wwt -> dwt): 4.6

PNEC_freshwater sediment

= (K_(susp-water)/ RHO_(susp))*PNEC_water * 1000

= (0.979/1150)* 1.35*1000

= 1.15 mg/kg wwt

= 5.3 mg/kg dwt

The respective PNEC (freshwater sediment) for cesium is 4.2 mg/L (dwt).

PNEC_marine water sediment

= (K_(susp-water)/ RHO_(susp))*PNEC_ marine water * 1000

= (0.979/1150)* 0.125*1000

= 0.115 mg/kg wwt

= 0.53 mg/kg dwt

The respective PNEC (marine water sediment) for cesium is 0.42 mg/L (dwt).

PNEC soil

K_(soil-water) = 0.295

RHO_(susp) = 1700

Conversion factor (wwt -> dwt): 1.13

PNEC_soil

= (K_(soil-water)/ RHO_(soil))*PNEC_water * 1000

= (0.295/1700)* 1.35* 1000

= 0.234 mg/kg wwt

= 0.265 mg/kg dwt

The respective PNEC (soil) for cesium is 0.21 mg/L (dwt).

Conclusion on classification

Based on the available data the test item has not to be classified according to Regulation (EC) No 1272/2008 (CLP).