Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

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

Sediment (freshwater)

Hazard assessment conclusion:
no hazard identified

Sediment (marine water)

Hazard assessment conclusion:
no hazard identified

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.092 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Derivation of PNECs according to the CHARM model [1]

Alternatively to the PNECseawater derived according to the Technical Guidance Documents (EC 2000), PNECs according to the CHARM model are determined.

In CHARM, effect data obtained with freshwater and marine organisms are not distinguished. Values for acute toxicity are available for each three freshwater and marine species, while NOECs for three freshwater trophic levels (for NOECfish see above) and one marine species are available. An extrapolation factor of 10 has to be applied to the lowest chronic NOEC. Applying these factors to the lowest NOEC (1.10 mg/L, Skeletoma costatum), the PNECs are:

PNECpelagic = 1.10 mg/L / 10 = 0.11 mg/L = 110 µg/L

According to CHARM, the PNECpelagic acute is calculated by dividing the extrapolation factor by 10. Therefore an assessment factor of 1 should be used for batchwise discharges.

PNECpelagic acute = 1.10 mg/L / 1 = 1.10 mg/L


[1] CHARM - Chemical Hazard Assessment and Risk Management. For the use and discharge of chemicals used offshore. User Guide Version 1.4 dated 3 February 2005. CHARM Implementation Network, CIN 2004 (http://www.ogp.org.uk/pubs/CHARMManualFeb05.pdf)

Conclusion on classification