Registration Dossier
Registration Dossier
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EC number: 912-631-7 | CAS number: 12022-95-6
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no data: aquatic toxicity unlikely
Marine water
- Hazard assessment conclusion:
- no data: aquatic toxicity unlikely
STP
- Hazard assessment conclusion:
- no emission to STP expected
Sediment (freshwater)
- Hazard assessment conclusion:
- no exposure of sediment expected
Sediment (marine water)
- Hazard assessment conclusion:
- no exposure of sediment expected
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no exposure of soil expected
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
The limited environmental data for FeSi means that calculating a PNEC is slightly problematic. However, the data obtained from the T/D tests should be used as a weight of evidence approach for hazard assessment purposes. These data indicated that FeSi appeared not to contain elements which may cause effects to aquatic organisms. Furthermore, the Daphnia magna reproduction study performed by Lillicrap (2011) indicated that there were no effects of FeSi high Ba which was chosen to be tested as a “worst case” grade of ferrosilicon and has been used for derivation of the PNEC. However, due to the lack of data, an assessment factor of 100 would result in an unrealistic PNEC value (below natural background concentration) and therefore, is not approapriate in this situation. Furthermore, since chronic effects of FeSi high Ba have not been observed in the crustacean Daphnia magna at an initial loading of 100 mg/L it is unlikely that there will be either acute or chronic effects observed in aquatic organisms and therefore no environmental hazard classification is proposed for FeSi.
No indications of endocrine disrupting effects have been observed in any of the studies.
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