Registration Dossier
Registration Dossier
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EC number: 421-690-3 | CAS number: 203515-86-0
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- November 1995- April 1996
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 996
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 106 (Adsorption - Desorption Using a Batch Equilibrium Method)
- GLP compliance:
- not specified
- Type of method:
- batch equilibrium method
- Media:
- soil
Test material
- Reference substance name:
- -
- EC Number:
- 421-690-3
- EC Name:
- -
- Cas Number:
- 203515-86-0
- Molecular formula:
- C14H21N3O6 . ClH
- IUPAC Name:
- 5-amino-N1,N3-bis(2,3-dihydroxypropyl)benzene-1,3-dicarboxamide hydrochloride
Constituent 1
Study design
- Test temperature:
- 20oC
Batch equilibrium or other method
Duration of adsorption equilibrationopen allclose all
- Sample No.:
- #1
- Initial conc. measured:
- 32.6 other: %
- pH:
- 7.4
- Sample No.:
- #2
- Initial conc. measured:
- 13.3 other: %
- pH:
- 3.6
- Sample No.:
- #3
- Initial conc. measured:
- 38.4 other: %
- pH:
- 5.6
Results and discussion
Adsorption coefficient
- Sample No.:
- #1
- Type:
- other: HPLC method
- Value:
- 32.6 other: %
- pH:
- 7.4
- Matrix:
- Clay-like soil
Results: HPLC method
- Details on results (HPLC method):
- Clay-like soil, pH 7.4: Adsorption = 32.6 %
Clay-like/sandy soil, pH 3.6: Adsorption = 13.3 %
Sandy soil, pH 5.6: Adsorption = 38.4 %
Applicant's summary and conclusion
- Conclusions:
- Adsorption:
In soil #1 (loamy) and #3(sandy) the substance adsorbed significantly.
Desorption:
In the effluent of the desorption test no test substance could be detected. The test substance stayed immobilised in the soil in all three soil-types.
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