Registration Dossier
Registration Dossier
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The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: - | CAS number: -
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2008
- Reliability:
- 1 (reliable without restriction)
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
- Report date:
- 2008
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
Test material
- Reference substance name:
- Strontium 4-chloro-2-[2-hydroxy-6-sulfonatonaphthalen-1-yl)diazenyl]benzoate
- Cas Number:
- 474814-88-5
- Molecular formula:
- C17H9ClN2O6SSr
- IUPAC Name:
- Strontium 4-chloro-2-[2-hydroxy-6-sulfonatonaphthalen-1-yl)diazenyl]benzoate
- Test material form:
- solid: nanoform, no surface treatment
Constituent 1
Study design
- Test temperature:
- room temperature
HPLC method
- Details on study design: HPLC method:
- The selection of the test system is based on the guidelines. HPLC is a useful method for estimation of the adsorption coefficient Koc. The Koc indicates the binding capacity of the test item on soil or sewage sludge and allows to compare the adsorption behaviour of different chemicals.
HPLC, UV-detection; YMC-Pack Cyano CN 125052504 QT, 250x4.0 mm, mobile phase: Methanol: 0.01 mol/l citrate buffer pH 6 (55:45 (v/v);
Results and discussion
Adsorption coefficientopen allclose all
- Type:
- Koc
- Value:
- 0.066
- Type:
- log Koc
- Value:
- -1.18
Results: HPLC method
- Details on results (HPLC method):
- Dead time of the HPLC-Sytem: 5.109 min.; Retention times of reference substances used for calibration: 2-Nitrobenzamid: 7.4 min; log Koc 1.45; Aniline: 8.0 min, log Koc 2.07; Phenyl benzoate: 15.7 min, log Koc: 7.87;
Parazophos: 24.8 min, log Koc 3.65; Phenanthrene: 25.5 min, log Koc 4.09; 4,4`-DDT: 72 min, log Koc 5.63; test substance: 5.37 min
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- The substance has no relevant adsorptive potential.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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