Registration Dossier
Registration Dossier
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EC number: 279-979-3 | CAS number: 82493-14-9
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
The adsorption coefficient (KOC) on soil and on sewage sludge was estimated using high performance liquid chromatography (HPLC) according to OECD 121 and Council Regulation (EC) No. 440/2008, Method C.19 for the test item.
The test was performed temperature controlled (19.5 – 19.7 °C) with mobile phase of 50 % acetonitrile and 50 % HPLC water. A 50 mg/L sample of the test itemHostavin 3206(impoverished of xylene)were analysed threefold via HPLC on a cyanopropyl (CN-) column with DAD-detection. Results are summarized below. Calibration was performed using six reference items for soil and six for sewage sludge with known values of log KOC, each with a nominal concentration of 2 mg/L. Analysis of the reference items were performed once before and after analysis of test item, respectively. Dead time of the HPLC-system was determined threefold using 2 mg/L sodium nitrate.
The estimated values oflogKOCandKOCfor the test item:
Soil |
Sewage Sludge |
|||
Component |
logKOC, soil |
KOC, soil |
logKOC, sewage sludge |
KOC, sewage sludge |
1 |
3.01 |
1.02×103 |
3.02 |
1.04×103 |
2 |
4.38 |
2.40×104 |
4.40(1) |
2.53×104(1) |
3(1) |
5.74 |
5.44×105 |
5.77 |
5.91×105 |
4(1) |
5.99 |
9.70×105 |
6.03 |
1.06×106 |
5(1) |
6.04 |
1.10×106 |
6.08 |
1.20×106 |
6(1) |
6.28 |
1.89×106 |
6.32 |
2.09×106 |
7(1) |
6.52 |
3.28×106 |
6.56 |
3.64×106 |
8(1) |
6.57 |
3.71×106 |
6.61 |
4.11×106 |
9(1) |
6.77 |
5.87×106 |
6.82 |
6.55×106 |
10(1) |
7.06 |
1.16×107 |
7.12 |
1.30×107 |
(1) Values for log KOCand correspondingKOCobtained here by extrapolation of calibration
According to the Mc Call classification scheme the test item with its componentsis classified aslow mobile to immobilein soil (KOC500-2000 to >5000).
Key value for chemical safety assessment
Additional information
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