Registration Dossier
Registration Dossier
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EC number: 700-777-2 | CAS number: -
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Study test phase 2012-05-02 to 2012-05-04. Study report 2012-08-16.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Meets the criteria as reliable without restriction according to Klimisch et al (1997).
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
- Report date:
- 2012
Materials and methods
Test guideline
- 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
- Type of method:
- HPLC estimation method
- Media:
- other: HPLC column
Test material
- Reference substance name:
- lithium 3-((3,4-dicyanophenyl)sulfonyl)propane-1-sulfonate)
- EC Number:
- 700-777-2
- Cas Number:
- 667889-11-4
- Molecular formula:
- C11H9N2O5S2Li
- IUPAC Name:
- lithium 3-((3,4-dicyanophenyl)sulfonyl)propane-1-sulfonate)
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
Constituent 1
- Radiolabelling:
- no
Study design
- Test temperature:
- 19.92 to 20.72 deg. C
HPLC method
- Details on study design: HPLC method:
- EQUIPMENT
- Apparatus: A HPLC comprising of HPLC pump, Injection valve fitted with 100ul loop, 250 x 4.6mm column packed with a 5 um CN phase, PDA scan 210nm to 400nm and chromotography data system.
MOBILE PHASES
- Type: 55% methanol and 45% deionised water pumped through at a flow rate of 1.5 ml/min
- pH: pH range 5.5 to 7.5
DETERMINATION OF DEAD TIME
- Method: by inert substances which are not retained by the column (sodium nitrate)
REFERENCE SUBSTANCES
- Identity: Acetanilide, Atrazine, Isoproturon, Linuron, Naphthalene, 1,2,3-Trichlorobenzene, Fenthion, Phenanthrene, ppDDT
EVALUATION
- Calculation of capacity factors k': k'= (retention time of test substance - column dead time)/ column dead time
- Calculation of retention times: All the reference substances were injected in duplicate, and the mean retention times were determined, Each concentration of test material (5.0 and 10 mg/L) was also injected in duplicate and the mean retention time determined for each concentration.
- Determination of the log Koc value: Determined from the equation of the line from the calibration graph of logKoc versus logk'
Batch equilibrium or other method
- Analytical monitoring:
- no
Results and discussion
Adsorption coefficientopen allclose all
- Type:
- log Koc
- Value:
- < 1.5
- Remarks on result:
- other: 5.0 mg/L
- Type:
- log Koc
- Value:
- < 1.5
- Remarks on result:
- other: 10 mg/L
Results: HPLC method
- Details on results (HPLC method):
- - Retention times (s) of reference substances used for calibration:
Acetanilide 171
Atrazine 269
Isoproturon 288
Linuron 475
Naphthalene 364
1,2,3-Trichlorobenzene 507
Fenthion 846
Phenanthrene 948
ppDDT 3116
- Details of fitted regression line (log k' vs. log Koc): y=2.74172x+ 1.35936 r2= 0.95418
- Average retention data for test substance(s): 10 mg/L 81, 5.0mg/L 79
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- The log10k' for the test substance could not be calculated at either test concentration (5.0mg/L and 10mg/L) because the peak eluted before the sodium nitrate peak, therefore, it is outside the range and accordingly the estimated log10Koc for the test material is reported as <1.5.
- Executive summary:
Introduction
This study was performed to estimate the adsorption coefficient (Koc) of the test material using a high performance liquid chromotography (HPLC) correlation technique. The method was designed to be compatible with:
-OECD Test Guideline 121, Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using HIgh Performance Liquid Chromotography (HPLC)
Results & Conclusions
The log10k' for the test substance could not be calculated at either test concentration (5.0mg/L and 10mg/L) because the peak eluted before the sodium nitrate peak, therefore, it is outside the range and accordingly the estimated log10Koc for the test material is reported as <1.5.
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