Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.004 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.041 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0 mg/L
Assessment factor:
10 000
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
3.14 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
41.1 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:
82.18 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Acute freshwater data was available for three trophic levels, fish, Daphnia and algae. Aquatic PNECs were calculated from the lowest L(E)C50 of 4.11 mg/L. The PNECs were as follows:

PNECfreshwater = 0.00411 mg/L

PNECmarine water = 0.000411 mg/L

PNECintermittent = 0.0411 mg/L

The PNEC for the STP was calculated from a respiration inhibition test 3 hour EC50 of 314 mg/L.

PNECstp = 3.14 mg/L

For soil and sediment PNECs the equilibrium partitioning method is used. EPM PNECs were calculated in EUSES with the following key inputs for the linear form of the molecule (which is worst case for EPM):

KOC: 1,000,000 (EUSES maximum)

Molecular weight: 671 g/mol

Vapour pressure: 0 pa (vapour pressure is extremely low so is set to 0 for practical purposes)

Water solubility: 4.1 (worst case value for equilibrium partitioning).

The PNECs were as follows:

PNEC sediment = 411 mg/kg dw

PNECmarine sediment = 41.1 mg/kg dw

PNECsoil = 82.18 mg/kg/dw

Conclusion on classification

The lowest acute EC50/LC50 derived was 4.11 mg/L. As the test substance is not considered readily biodegradable this leads to a classification of toxic to aquatic organisms - chronic category 2.

H411 - toxic to aquatic organisms with long lasting effects.