Registration Dossier
Registration Dossier
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 629-765-4 | CAS number: 1226892-44-9
Sediment toxicity
Administrative data
Link to relevant study record(s)
Description of key information
In the absence of measured data the PNECsed was calculated using the equilibrium partitioning method (EPM).
Key value for chemical safety assessment
Additional information
In the absence of measured data the PNECsed was calculated using the equilibrium partitioning method (EPM). According to the TGD this method uses the PNECaquaticand the sediment/water partitioning coefficient as inputs. However, since the available PNECaquaticis based on the bulk concentration present in surface water a re-calculation is necessary first:
PNECaquatic, dissolved = PNECaquatic bulk/ (1 + Kpsusp* SUSPwater* 10-6)
Where: PNECaquatic bulk = 25.5 µg/L
Kpsusp = 94000 L.kg-1
SUSPwater = 15 mg.L-1(TGD)
The PNECsedis then calculated using the equations detailed in the TGD:
PNECsed = Ksusp-water* PNECaquatic dissolved* 1000 * 1 / RHOsusp
Where: PNECaquatic dissolved = 10.58 µg/L
Ksusp-water = 23500.9 m3.m-3
RHOsusp = 1150 kg.m-3(TGD, equ. 18)
PNECsed-EPM = 216.1 mg/kg ww
= 994.2 mg/kg dw
Applying the additional safety factor for exposure via ingestion: 10
PNECsed-EPM = 21.6 mg/kg ww
= 99.4 mg/kg dw
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
