Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Partition coefficient
Administrative data
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2008
- Reliability:
- 1 (reliable without restriction)
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 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Deviations:
- yes
- Remarks:
- Due to the chemical structure of the test substance it was not possible to determine the partition coefficient in the non-ionised form
- Principles of method if other than guideline:
- Due to the chemical structure of the test substance it was not possible to determine the partition coefficient in the non-ionised form. The pka-value of the carboxylic acid group is 3,5, the pka value of the sulfonic acid group is 0,6. The Determination of the Partition Coefficient at a pH-value below 0,6 is not feasible. The partition coefficient of the substance under the experimental conditions was <0.3 (less than the lowest standard 2 -Butanone).
- GLP compliance:
- yes
- Type of method:
- HPLC method
- Partition coefficient type:
- octanol-water
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
- Analytical method:
- high-performance liquid chromatography
Results and discussion
Partition coefficient
- Type:
- log Pow
- Partition coefficient:
- < 0.3
- Temp.:
- 23 °C
- pH:
- >= 6 - <= 8
- Details on results:
- Due to the chemical structure of the test substance it was not possible to determine the partition coefficient in the non-ionised form. The pka-value of the carboxylic acid group is 3,5, the pka value of the sulfonic acid group is 0,6. The Determination of the Partition Coefficient at a pH-value below 0,6 is not feasible. The partition coefficient of the substance under the experimental conditions was <0.3 (less than the lowest standard 2 -Butanone).
Applicant's summary and conclusion
- Conclusions:
- The substance does not have a relevant bioaccumulation. This is also in correlation to the chemical structure (salt).
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