Registration Dossier
Registration Dossier
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EC number: 242-833-4 | CAS number: 19139-31-2
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Experimental start date 14 March 2018. Experimental completion date 21 June 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 121 (Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC))
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC estimation method
- Media:
- soil
- Key result
- Type:
- log Koc
- Value:
- 4.8 dimensionless
- Temp.:
- 25 °C
- Validity criteria fulfilled:
- yes
- Conclusions:
- The test item, Dihexyl Fumarate (EC 242-833-4), was found to have a log10Koc value of 4.8.
Reference
Results
A calibration plot of log10k’ versus log10Kocwas constructed for the reference standards
(Table 5, Figure 2). The logarithm of the capacity factor for the test item was then calculated and the log10Kocvalue was determined by interpolation.
The test item, Dihexyl Fumarate (EC 242-833-4), was thus determined to have a log10Kocvalue of 4.8 (equivalent to a Kocvalue of 69000). Figures 3 and 4 present examples of chromatograms generated during this test.
Table 5 HPLC Determination of Log10Kocfor Dihexyl Fumarate (EC 242-833-4)
| Sample | Component | tr(minutes) | k' | log10k’ | log10Koc |
| Standard Run A | Acetanilide | 3.366 | 0.209 | -0.681 | 1.3 |
| (t0 = 2.785 minutes) | Nitrobenzene | 4.139 | 0.486 | -0.313 | 2.4 |
| Naphthalene | 4.83 | 0.734 | -0.134 | 2.8 | |
| 2-Methylnaphthalene | 5.132 | 0.843 | -0.074 | 3.9 | |
| Anthracene | 5.724 | 1.055 | 0.023 | 4.4 | |
| DDT | 8.577 | 2.08 | 0.318 | 5.6 | |
| Sample A | Dihexyl Fumarate (EC 242-833-4) | 7.133 | 1.53 | 0.185 | 4.8 |
| (t0 = 2.819 minutes) | |||||
| Sample B | Dihexyl Fumarate (EC 242-833-4) | 7.133 | 1.528 | 0.184 | 4.8 |
| (t0 = 2.822 minutes) | |||||
| Standard Run B | Acetanilide | 3.407 | 0.212 | -0.673 | 1.3 |
| (t0 = 2.810 minutes) | Nitrobenzene | 4.19 | 0.491 | -0.309 | 2.4 |
| Naphthalene | 4.938 | 0.757 | -0.121 | 2.8 | |
| 2-Methylnaphthalene | 5.261 | 0.872 | -0.059 | 3.9 | |
| Anthracene | 5.889 | 1.096 | 0.04 | 4.4 | |
| DDT | 8.81 | 2.135 | 0.329 | 5.6 | |
Description of key information
The test item, Dihexyl Fumarate (EC 242-833-4), was found to have a log10Koc value of 4.8.
Key value for chemical safety assessment
- Koc at 20 °C:
- 4.8
Additional information
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