Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Sediment toxicity
Administrative data
Link to relevant study record(s)
Description of key information
Aquatic toxicity studies are not available for Slag, pig iron ladle refining, non-granulated, water-cooled. Read-across to the assessment entity (analogue approach) to slags, steelmaking is applied for the assessment of Slag, Pig Iron ladle refining, non-granulated, water-cooled since the solved metal ion concentrations determine its fate and toxicity in the environment. Based on result of a leaching experiment performed with the target substance (i.e., Slag, pig iron ladle refining, non-granulated, water-cooled) and the source substance (i.e., slags steelmaking) solved metal ion concentrations of the target substance are similar to the solved metal concentrations of the source substance. Read-across is fully justified and discussed in detail in the RAAF document attached on IUCLID section 13.
No special studies on sediment toxicity to benthic organisms are available but several observations suggest that slags do not negatively influence the sediment quality and that slags are excellent substrate for growth of benthos.
Key value for chemical safety assessment
- EC10, LC10 or NOEC for freshwater sediment:
- 100 000 mg/kg sediment dw
- EC10, LC10 or NOEC for marine water sediment:
- 100 000 mg/kg sediment dw
Additional information
In a field study it has been shown that benthic organisms growing on slags (BOS) exhibited even greater species diversity and population density than on natural rock. So no negative influence of slags on benthic organisms could be detected. Therefore a NOEC = 100 g/kg was taken as a default value for calculations.
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