Registration Dossier
Registration Dossier
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EC number: 701-392-2 | CAS number: -
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 013
- Report date:
- 2013
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 121 (Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC))
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC estimation method
Test material
- Reference substance name:
- 2-tetradecyloxirane, reaction products with boric acid
- EC Number:
- 701-392-2
- IUPAC Name:
- 2-tetradecyloxirane, reaction products with boric acid
- Details on test material:
- - Physical state: Waxy off-white solid
- Analytical purity: Not applicable - complex mixture
- Lot/batch No.: 0101033612
- Stability under test conditions: Normally stable at moderately elevated temperatures and pressures
- Storage condition of test material: Room temperature in the dark
Constituent 1
- Radiolabelling:
- no
Study design
HPLC method
- Details on study design: HPLC method:
- The sample, dead time and reference standard solutions were injected in duplicate using the following HPLC parameters:
HPLC System Agilent Technologies 1050, incorporating autosampler, workstation and Polymer Laboratories Evaporative Light Scattering Detector 2100 (ELSD)
Column Xselect HSS cyano 5 µm (150 x 4.6 mm id)
Column temperature 30 °C
Mobile phase Methanol:water (55:45 v/v)
pH of mobile phase 5.3
Flow-rate 1.0 mL/min
Injection volume 10 µL
UV detector wavelength dead time and reference standards: 210 nm
Detector (ELSD) parameters Nebuliser temperature: 70°C
Evaporative temperature: 80°C
Gas flow: 1.0 SLM
Results and discussion
Adsorption coefficientopen allclose all
- Key result
- Type:
- Koc
- Value:
- > 427 000 dimensionless
- pH:
- 5.8
- Temp.:
- 30 °C
- Key result
- Type:
- log Koc
- Value:
- > 5.63 dimensionless
- pH:
- 5.8
- Temp.:
- 30 °C
Results: Batch equilibrium or other method
- Transformation products:
- not measured
Any other information on results incl. tables
Table showing the retention times of the standards
Standard |
RetentionTime(mins) |
MeanRetentionTime(mins) |
CapacityFactor(k) |
Log10k |
Log10Koc |
|
Injection1 |
Injection2 |
|||||
Acetanilide |
2.766 |
2.761 |
2.764 |
0.418 |
-0.379 |
1.25 |
Phenol |
2.639 |
2.639 |
2.639 |
0.354 |
-0.451 |
1.32 |
Atrazine |
3.899 |
3.906 |
3.903 |
1.00 |
7.79X10-4 |
1.81 |
Isoproturon |
4.248 |
4.265 |
4.257 |
1.18 |
7.31X10-2 |
1.86 |
Linuron |
6.220 |
6.266 |
6.243 |
2.20 |
0.343 |
2.59 |
Naphthalene |
5.226 |
5.233 |
5.230 |
1.68 |
0.226 |
2.75 |
Endosulfan-diol |
8.127 |
8.076 |
8.102 |
3.16 |
0.499 |
3.02 |
Fenthion |
9.845 |
9.765 |
9.805 |
4.03 |
0.605 |
3.31 |
alpha-endosulfan |
14.476 |
14.425 |
14.451 |
6.41 |
0.807 |
4.09 |
Phenanthrene |
10.524 |
10.592 |
10.558 |
4.42 |
0.645 |
4.09 |
Diclofop-methyl |
15.577 |
15.614 |
15.596 |
7.00 |
0.845 |
4.20 |
DDT |
32.935 |
33.100 |
33.018 |
15.9 |
1.20 |
5.63 |
Retention time for test item
Injection |
RetentionTime(mins) |
CapacityFactor(k') |
Log10k' |
Log10K00 |
MeanLog10Koc |
AdsorptionCoefficient |
1 |
39.680 |
>15.936 |
>1.202 |
>5.63 |
>5.63 |
>4.27X105 |
2 |
39.680 |
>15.936 |
>1.202 |
>5.63 |
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Executive summary:
The adsorption coefficient was performed using the HPLC screening method according to OECD Guideline 121 and EC Method C.19.
The test item had no dissociation constants within the environmentally relevant pH range and therefore was tested in an unadjusted mobile phase. The sample was prepared in tetrahydrofuran that had been shaken with anhydrous sodium sulphate in an attempt to remove residual water and reduce any potential hydrolysis that may occur while in solution prior to analysis.
The adsorption coefficient (Koc) of the test item has been determined to be > 4.27E05, Log Koc > 5.63.
[LogKoc: 5.63]
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