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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Sediment toxicity

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Administrative data

Link to relevant study record(s)

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



3986 L/kg


5979 m3/m3


7972 L/kg


1993 m3/m3


3986 L/kg


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