Registration Dossier
Registration Dossier
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EC number: 237-185-4 | CAS number: 13680-35-8
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:
- November - December 2014
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.19 (Estimation of the Adsorption Coefficient (KOC) on Soil and Sewage Sludge Using High Performance Liquid Chromatography (HPLC))
- Deviations:
- no
- 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:
- suspended matter
- Specific details on test material used for the study:
- TEST MATERIAL
- Substance identification/name in the report: LZ 596
- Molecular formula: C21H30N2
- Batch no.: 1229
- Analysis date: August 12, 2014
- Date of production: August 11, 2014
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage conditions: Controlled room temperature (15-25ºC, <70 RH%), protected from light and humidity.
- Stability under test conditions: stable for min. 3 years from manufacturing date
- Expiry date: August 10, 2017
- Safety precautions: Routine safety precautions (lab coat, gloves, safety glasses, face mask) for unknown materials were applied to assure personnel health and safety. - Radiolabelling:
- no
- Test temperature:
- room temperature
- Details on study design: HPLC method:
- APPARATUS:
- Stationary Phase: LiChrospher 100 CN, 5 μm, 250 × 4 mm, No: 933278
- HPLC system: Merck-Hitachi LaChrom Elite
L-2000 Organizer, No.: 23E94-011
L-2130 HPLC pump, No.: 23E60-025
L-2200 Autosampler, No.: 23E91-010
L-2400 UV Detector, No.: 23E88-005
L-2350 Column Oven, No.: 2383-009
- Balances: BL 120S, Sartorius, No.: 15307011 PG 203 S,
Mettler Toledo, No.: 1122082152 AB54-S,
Mettler Toledo, No.: 1122092721
- pH meter: HACH, HQ40d, No.: 090400030482
- Ultrasonic bath: Branson 3210E-MT, No.: A700343D
- Water purification system: MILLIPORE, DIRECT Q5, No.: F0DA13956K
CONDITIONS:
- Mobile Phase: Methanol / 0.01M Citrate-buffer pH 6.0 (55/45% v/v)
- Flow: 1.0 mL/min
- Injection volume: 5 μL
- Column temperature: 25°C
- Detection wavelength: 254 nm, 210 nm in case of Sodium nitrate - Key result
- Type:
- Koc
- Value:
- 6 990 dimensionless
- Temp.:
- 20 °C
- Matrix:
- HPLC-system
- Remarks on result:
- other: mean value; pH not measured
- Key result
- Type:
- log Koc
- Value:
- 3.8 dimensionless
- Temp.:
- 20 °C
- Matrix:
- HPLC-system
- Remarks on result:
- other: mean value; pH not measured
- Details on results (HPLC method):
- Accuracy and repeatability of the calibration points
Chemical name Reference log KOC Retention time (min) log k log KOC (back calculated) Accuracy log unit Repeatability log unit
Acetanilide 1.25 3.35 -0.232 1.00 0.25 0.000
Methyl benzoate 1.80 3.69 -0.097 1.63 0.17 0.012
Naphthalene 2.75 5.20 0.187 2.95 0.20 0.013
Fenthion 3.31 6.70 0.356 3.74 0.43 0.009
Phenanthrene 4.09 7.85 0.452 4.19 0.10 0.007
4,4’-DDT 5.63 12.14 0.693 5.31 0.32 0.010 - Validity criteria fulfilled:
- yes
- Conclusions:
- The estimated log Koc value of the test item was determined to be 3.8. The estimated Koc is 6990.
- Executive summary:
The test item was investigated for its adsorption/desorption behavior in a screening test, in accordance with EC-method C.19 (HPLC-method). The estimated log Koc value of the test item was determined to be 3.8. The estimated Koc is 6990.
Reference
Description of key information
The test item was investigated for its adsorption/desorption behaviour in a screening test, in accordance with EC-method C.19 (HPLC-method). The estimated log Koc value of the test item was determined to be 3.8. The estimated Koc is 6990.
Key value for chemical safety assessment
- Koc at 20 °C:
- 6 990
Additional information
Source: GLP-report
[LogKoc: 3.8]
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