Registration Dossier
Registration Dossier
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EC number: 234-858-4 | CAS number: 12037-47-7
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no hazard identified
Marine water
- Hazard assessment conclusion:
- no hazard identified
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- no hazard identified
Sediment (marine water)
- Hazard assessment conclusion:
- no hazard identified
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no hazard identified
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Classification related key information
Biodegradation in water: Substance is inorganic
Log Kow: not applicable
Acute toxicity:
- to fish: LC50 (96h) > 100 mg/L for Oncorhynchus mykiss and Danio rerio (OECD 203), RA
- to aquatic invertebrates: EC50 (48h) > 100 mg/L for Daphnia magna (OECD 202), RA
- to algae: ECr50 (72h) > 100 mg/L, for Desmodesmus subspicatus (OECD 201), RA
Chronic toxicity:
- to fish: no data
- to aquatic invertebrates: no data
- to algae: NOEC (72h) ≥ 100 mg/L for Desmodesmus subspicatus (OECD 201), RA
Classification justification according to CLP
Silicon orthophosphate is inorganic. The acute aquatic toxicity E(L)C50 is > 100 mg/L for all trophic levels. No chronic toxicity data are available for fish and aquatic invertebrates. Valid chronic toxicity data are available for the alga Desmodesmus subspicatus with a NOEC ≥ 100 mg/L. Based on these data, silicon orthophosphate does not need to be classified as environmental hazard according to the Regulation (EC) No. 1272/2008 (CLP) and the Regulation (EU) No. 286/2011 (2ndATP).
Classification justification according to DSD
Silicon orthophosphate is inorganic. The acute aquatic toxicity E(L)C50 is > 100 mg/L for all trophic levels. Therefore, Silicon orthophosphate does not need to be classified as environmental hazard according to the Directive 67/548/EEC.
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