Amines, N'-[3-[(3-aminopropyl)amino]propyl]-N,N-di-C16-18-alkyltrimethylenedi-

Sediment toxicity

Link to relevant study record(s)

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

Additional information

Distribution constants for Di-C16 -18 Tetramine

 

Kpsoil	3986 L/kg	Ksoil-water	5979 m^3/m^3
Kpsusp	7972 L/kg	Ksusp-water	1993 m^3/m^3
Kpsed	3986 L/kg	Ksed-water	1993 m^3/m^3

 

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

                         PNEC_sed                         =   K_susp-water* PNEC_{aquatic dissolved}* 1000 * 1 / RHO_susp

Where:         PNEC_aquatic             =      1 µg/L

                         K_susp-water                     =      1993 m³/m³

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

                         PNEC_sed-EPM                = 1.733 mg/kg ww

                                                                = 7.97 mg/kg dw