Registration Dossier
Registration Dossier
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EC number: 215-223-0 | CAS number: 1314-15-4
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
Environmental classification for the poorly water soluble substances under consideration is based on the lowest acute and chronic threshold values from the platinum ecotoxicity test data combined with TDp test data generated as outlined in OECD Guidance Document on Transformation/Dissolution of Metals and Metal Compounds in Aqueous Media (OECD, 2001).
Platinum dioxide has been tested in a full TDp assay according to OECD TG29 (cfr. details in IUCLID section 4 'Water solubility'). Platinum dioxide dissolution [in µg/L]
in this assay is summarised as:| 24h Screening* | 7d TDp | 28d TDp | |||||||
| MWt | Pt Wt% | 100 mg/L@pH6 | 100 mg/L@pH8.5 | 1 mg/L | 10 mg/L | 100 mg/L | 1 mg/L | ||
| Platinum dioxide | PtO2 | 227.08 | 85.9 | 107 | 101 | 1.4 | 12.4 | 112.7 | 1.3 |
*values in bold give the highest metal release. The consequent 7 and 28 day tests are performed at this pH value.
The acute and chronic ERV values, derived for other soluble platinum(IV) subtances, are 20.5 (48h EC50 value for D. magna with hexachloroplatinic acid (Moll and Wydra, 2005)) and 7 µg Pt/L (21d NOEC for D. magna with hexachloroplatinic acid (Biesinger and Christensen, 1972) and 72h EC10 for P. subcapitate with dihydrogen hexahydroxyplatinate, compound with 2-aminoethanol (Wenzel, 2016)) corresponding to 23.9 and 8.2 µg PtO2/L (conversion based on molecular weight conversion from soluble ion to the substance considered)
Comparing the acute and chronic ERV values with the TDp test results (cfr table below) as outlined in ECHA Guidance on the application of the CLP criteria (version 5.0; ECHA, 2017), it is concluded that the metal release at all doses and duration relevant for classificiation are well below the ERV values, and that no classification for environmental hazard is required:
| Acute ERV (µg TI/L) |
Chronic ERV (µg TI/L) |
24h Screening* | 7d TDp | 28d TDp | Acute aquatic hazard | Long-term aquatic hazard | |||||||
| MWt | Pd Wt% | 100 mg/L@pH6 | 100 mg/L@pH8.5 | 1 mg/L | 10 mg/L | 100 mg/L | 1 mg/L | ||||||
| Platinum dioxide | PtO2 | 227.08 | 85.9 | 23.86 | 8.15 | 107 | 101 | 1.6 | 12.4 | 112.7 | 1.3 | not classified | not classified |
*values in bold give the highest metal release. The consequent 7 and 28 day tests are performed at this pH value.
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