Registration Dossier
Registration Dossier
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EC number: 237-489-7 | CAS number: 13815-17-3
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.045 µg/L
- Assessment factor:
- 50
- Extrapolation method:
- assessment factor
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.004 µg/L
- Assessment factor:
- 500
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 526 µg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.274 mg/kg sediment dw
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.027 mg/kg sediment dw
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 0.02 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
This substance is a member of the category of "Palladium & inorganic Palladium substances". As such,
the data requirements for this substance are covered by relevant and reliable experimental test data generated for all members of this category via a read-across approach.
A read-across justification report and PNEC derivation report are attached in IUCLID Annex 13.
Conclusion on classification
Environmental classification for the soluble metal substances under consideration is based on the lowest acute and chronic threshold values from the Pd ecotoxicity test data:
-chronic ERV: lowest chronic threshold value is 2.26 µg Pd/L (geometric mean EC10 value (growth rate) with P. subcapitata, based on the experimental results for diamminedichloropalladium (EC10 = 1.88 µg Pd/L; Wenzel 2012) and tetraamminepalladium dichloride (EC10=2.72 µg Pd/L; Wenzel 2018))
-acute ERV: lowest acute threshold value is 3.57 µg Pd/L (geometric mean EC50 value (growth rate) with P. subcapitata, based on the experimental results for diamminedichloropalladium (EC50=2.96 µ Pd/L; Wenzel 2012) and tetraamminepalladium dichloride (EC50 = 4.31 µg Pd/L; Wenzel 2018)).
The derivation of both ERV values is detailed in the read-across justification report (cfr. IUCLID Section 13) and PNEC derivation report (cfr. IUCLID Section 13).
For classification purposes, these ERVs have been recalculated to the values expressed as the concentration of the substance (conversion based on molecular weight conversion from soluble ion to the substance considered – cfr. details in below table). This results in a classification as Acute Category 1 and Chronic Category 1 for all substances contained in the below table. Acute and chronic M-factors are based on the value of the substance-specific acute and chronic ERV, as outlined in ECHA Guidance on the application of the CLP criteria (version 5.0; ECHA, 2017) - cfr. below table.
| Substance name | Molecular formula | MWt | Pd Wt% | Acute ERV (µg TI/L) |
Chronic ERV (µg TI/L) |
Acute aquatic hazard | Acute M-factor |
Long-term aquatic hazard | Chronic M-factor |
| Palladium dichloride | PdCl2 | 177.3 | 60.0 | 5.9 | 3.8 | category Acute 1 | M=100 | category Chronic 1 | M=10 |
| Dihydrogen tetrachloropalladate | Cl4Pd.2H | 250.2 | 42.5 | 8.4 | 5.3 | category Acute 1 | M=100 | category Chronic 1 | M=10 |
| Palladium sulphate | PdSO4 | 202.5 | 52.6 | 6.8 | 4.3 | category Acute 1 | M=100 | category Chronic 1 | M=10 |
| Disodium tetrachloropalladate | Na2PdCl4 | 294.2 | 36.2 | 9.9 | 6.2 | category Acute 1 | M=100 | category Chronic 1 | M=10 |
| Diamminedichloropalladium | Cl2H6N2Pd | 211.4 | 50.3 | 7.1 | 4.5 | category Acute 1 | M=100 | category Chronic 1 | M=10 |
| Tetraamminepalladium (II) nitrate | H12N4Pd(NO3)2 | 298.6 | 35.6 | 10.0 | 6.3 | category Acute 1 | M=10 | category Chronic 1 | M=10 |
| Tetraamminepalladium(2+) dichloride | H8Cl2N4Pd | 241.4 | 44.1 | 8.1 | 5.1 | category Acute 1 | M=100 | category Chronic 1 | M=10 |
| Tetraamminepalladium(2+) dihydroxide | H12N4Pd(OH)2 | 208.6 | 51.0 | 7.0 | 4.4 | category Acute 1 | M=100 | category Chronic 1 | M=10 |
| Tetramminepalladium(2+) diacetate | C4H22N4O6Pd | 328.7 | 32.4 | 11.0 | 7.0 | category Acute 1 | M=10 | category Chronic 1 | M=10 |
| Dipotassium hexachloropalladate | K2PdCl6 | 397.3 | 26.8 | 13.3 | 8.4 | category Acute 1 | M=10 | category Chronic 1 | M=10 |
| Diammonium hexachloropalladate | (NH4)2PdCl6 | 355.2 | 30.0 | 11.9 | 7.5 | category Acute 1 | M=10 | category Chronic 1 | M=10 |
| Tetraamminepalladium(2+) hydrogencarbonate | C2H14O6.N4Pd | 296.6 | 35.9 | 9.9 | 6.3 | category Acute 1 | M=100 | category Chronic 1 | M=10 |
| Pd acetate | Pd.(C2H3O2)2 | 224.5 | 47 | 7.5 | 4.8 | category Acute 1 | M=100 | category Chronic 1 | M=10 |
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