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Ecotoxicological information

Sediment toxicity

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Reference
Endpoint:
sediment toxicity: long-term
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
Executive summary:

Aquatic PNEC is used to calculate the benthic PNEC using a Kpsed of 50000 L/kg.

Description of key information

PNEC for benthic organisms is calculated applying the equilibrium partitioning method using a Kpsed (or Kdsed) of 7972 L/kg

Key value for chemical safety assessment

Additional information

Distribution constants for Di-C16 -18 Tetramine

 

Kpsoil

3986 L/kg

Ksoil-water

5979 m3/m3

Kpsusp

7972 L/kg

Ksusp-water

1993 m3/m3

Kpsed

3986 L/kg

Ksed-water

1993 m3/m3

 

The PNECsed is then calculated using the equations detailed in REACH guidance R.16:

                         PNECsed                         =   Ksusp-water* PNECaquatic dissolved* 1000 * 1 / RHOsusp

Where:         PNECaquatic             =      1 µg/L

                         Ksusp-water                     =      1993 m3/m3

                         RHOsusp                         =      1150 kg.m-3(TGD, equ. 18)

                         PNECsed-EPM                = 1.733 mg/kg ww

                                                                = 7.97 mg/kg dw