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EC number: 922-670-1 | CAS number: -
The calculated classification via Summation method (lower Tier Arche CLP Tool) resulted in an "Acute Chronic Category 1" classification for the UVCB substance
Based on this result, the related criteria provided the estimated value for acute (short term) toxicity to aquatic invertebrate (see EU CLP Guidance Annex I Table 4.1.0): 48hr EC50 (for crustacea) < or equal 1 mg/l.
The study provided a conservative estimate of the EC50 (for crustacea), derived on basis of the Classification outcome (Mixture toxicity rules) from a Worst Case (max across industry) as defined in IUCLID section 1.4/4.23. The result is applicable to all Sulphuric acid, copper smelting that fall under the defined concentration ranges (IUCLID section 1.2).
Validity of the model used:
Adequacy of prediction: the substance falls within the applicability domain described above and, therefore, the predicted value can be considered as reliable. The prediction is moreover conservative as the Lower Tier approach was used (ie elemental composition + mineralogy is known, no T/D available). Same conclusions apply to the prediction of the Aquatic toxicity value.
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