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EC number: 406-850-2 | CAS number: 133855-98-8 BAS 480 F
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Adsorption of epoxiconazole to solid phase is expected.
Key value for chemical safety assessment
- Koc at 20 °C:
- 905.9
Additional information
Three studies on the soil adsorption and desorption of epoxiconazole are available (Ochsenbein, 1988; Secher, 2002 and BASF AG, 2005).
The GLP study conducted according to OECD guideline 106 is a key study, since this is the newest study performed with five diferent soils. The log Koc of radiolabeled epoxiconazole was determined in this study. A HPLC estimation method was used in this study. The Koc was estimated to be in the range between 945 and 2451 L/kg (Log Koc: 3-3.4, BASF AG, rep.no.: 1012874, 2005).
A summary table of all obtained adsorption endpoints for epoxiconazole can be found in the table below:
Table 1.Adsorption of epoxiconazole in various soil types
Refrence: |
Soil |
Soil type |
OC |
pH |
Kf |
Kfoc |
1/n |
Ochsenbein, 1988, rep. no:1988/0563 |
Lufa 2.1 |
Sand |
0.5 |
6.0 |
4.79 |
957 |
0.766 |
Les Evouettes |
Sandy loam |
0.74 |
4.75 |
19.59 |
2647 |
0.813 |
|
Itingen |
Clay/clay loam |
1.98 |
6.87 |
21.78 |
1100 |
0.808 |
|
; Secher, 2002, rep. no.:2002/1004272 |
Altlussheim |
Loam |
2.6 |
7.1 |
7.25 |
280 |
0.882 |
Siebeldingen |
Clay |
2.0 |
6.8 |
7.50 |
380 |
0.910 |
|
BASF AG, 2005, rep. no.:2005/1012874 |
Utrera |
Sand / loamy sand |
0.42 |
5.9 |
8.24 |
1962 |
0.846 |
Li 10 (1680) |
Loamy sand |
0.87 |
6.6 |
9.27 |
1065 |
0.859 |
|
Forst H6 |
Sandy loam / loam |
1.61 |
7.1 |
14.8 |
922 |
0.882 |
|
LUFA 3A |
Loam |
2.54 |
7.3 |
17.8 |
702 |
0.839 |
|
LUFA 5M |
Sandy loam |
1.46 |
7.3 |
13.5 |
928 |
0.849 |
|
Geometric mean (n = 10) |
905.9 |
- |
|||||
Arithmetic mean (n = 10) |
- |
0.845 |
|||||
Based on the available experimental data it can be concluded that adsorption of epoxiconazole to solid phase is expected.
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