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EC number: 273-732-3 | CAS number: 69012-32-4 By-product of smelting of phosphate rock, silica and coke in manufacture of phosphorus.
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 data: aquatic toxicity unlikely
Sediment (freshwater)
- Hazard assessment conclusion:
- insufficient hazard data available (further information necessary)
Sediment (marine water)
- Hazard assessment conclusion:
- insufficient hazard data available (further information necessary)
Hazard for air
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- insufficient hazard data available (further information necessary)
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Due to the poor water solubility aquatic test animals will not be significantly exposed in an aquatic toxicity test. Therefore it is proposed to waive these tests and a PNECaquatic has not been derived. For the derivation of a PNEC for benthic organisms as well as for sediment organisms, no data are currently available.
Based on the available data on water solubility and the toxicity of the potentially solved elements, it is concluded that P-slag does not need to be classified for the environment. This implies that an assessment of the environmental exposure is not required.
Conclusion on classification
For the classification of P-slag the approach developed for poorly soluble inorganic metal compounds is applied as described in the CLP-Guidance (p.486 onwards). The results obtained in the Dissolution/transformation test show that at the three loadings in the test: 1, 10 and 100 mg/l after 7 days the levels of relevant ions did not exceed the conservatively established upper levels of the EC50 values for the ions. Following the decission scheme in the CLP Guidance Annex VI, figure IV.5.1 The answer to the first question :
L(E)C50 of soluble metal ion > 100 mg/l : YES results in the decision that no classification for environmental hazards is needed.
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