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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Description of key information

PNEC for bethic organisms is calculated applying the equilibrium partitioning method using a  Koc of  21 L/kg)

Key value for chemical safety assessment

Additional information

PNEC sediment-freshwater

In the absence of measured data the PNECsedcan be provisionally calculated using the equilibrium partitioning method (EPM). According to the TGD this method uses the PNECaquaticand the sediment/water partitioning coefficient as inputs.


The PNECsedis calculated using the equations detailed in the TGD:

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


PNECaquatic      =     0.095 mg/L SCN- (0.125 mg/L NH4SCN)

Ksusp-water           =    1.425 m3.m-3

Koc                     =    21 L/kg

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


Conversion factor from mg/kg/ww to mg/kg/dw = 4.607


PNECsed-EPM  = 0.1177 mg/kg ww = 0.5423 mg/kg dw