Registration Dossier
Registration Dossier
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EC number: 240-085-3 | CAS number: 15956-58-8
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Reliable environmental geochemical data are available from a study by Hernandez et al. (2010) based on a collection of 35 European soils covering different ranges of pH (3.0-8.5), organic carbon and manganese. A median soil/porewater partition coefficient logKp 3.13 was derived. Regarding Mn partitioning in stream water and sediments, high quality environmental geochemical data for Europe are provided by the Forum of European Geological Surveys (FOREGS, Salminen et al. 2005). Reliable baseline levels of manganese in water and sediment were determined in 738 paired samples covering a wide range of environmental conditions. Assuming an equilibrium between manganese in water and sediment, a median stream water/sediment partition coefficient logKp of 4.57 was derived.
Data on manganese partitioning in suspended matter-freshwater are available from four field studies in European freshwater bodies (see Table below)
Table: Studies used for derivation
Study |
Median Kp susp-freshwater |
n |
site |
Vesely et al., 2001 |
28.18 |
119 |
54 rivers, 119 sites (Czech Republic, EU) |
Irmer et al., 1985 |
5500 |
16 |
1 sampling area in Elbe River (Germany, EU) |
Dellwig et al., 2007 |
6420 |
ca. 50 |
1 site (Germany, EU) |
Oedman et al., 1999 |
363078 |
24 |
2 Rivers, 1 Lake (Sweden, EU) |
| Median Kp susp-water | 5960 |
In a weight-of-evidence approach, a median suspended matter - freshwater partition coefficient log Kp of 3.78 was calculated based on the median partition coefficients of 4 independent studies.
Key value for chemical safety assessment
Other adsorption coefficients
- Type:
- log Kp (solids-water in soil)
- Value in L/kg:
- 3.13
Other adsorption coefficients
- Type:
- log Kp (solids-water in sediment)
- Value in L/kg:
- 4.57
Other adsorption coefficients
- Type:
- log Kp (solids-water in suspended matter)
- Value in L/kg:
- 3.78
Additional information
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