Registration Dossier
Registration Dossier
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EC number: 231-043-5 | CAS number: 7420-89-5
Partition coefficient
Administrative data
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 28 MAR 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Version / remarks:
- According to OECD 117 resp. EU A.24
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- HPLC method
Test material
- Reference substance name:
- Disodium 1,5-dihydroxypentane-1,5-disulphonate
- Cas Number:
- 7420-89-5
- Molecular formula:
- C5H10Na2O8S2
- IUPAC Name:
- Disodium 1,5-dihydroxypentane-1,5-disulphonate
- Reference substance name:
- Sodium sulfate
- Cas Number:
- 7757-82-6
- IUPAC Name:
- Sodium sulfate
- Reference substance name:
- Sodium hydrogen sulfite
- Cas Number:
- 7631-90-5
- IUPAC Name:
- Sodium hydrogen sulfite
Constituent 1
impurity 1
impurity 2
Study design
- Analytical method:
- high-performance liquid chromatography
Results and discussion
Partition coefficient
- Key result
- Type:
- log Pow
- Partition coefficient:
- < 0.3
- Temp.:
- 25 °C
- pH:
- ca. 6 - ca. 7
- Remarks on result:
- other: Could not be calculated.
- Details on results:
- The correlation log K/Log POW is good: the coefficient of determination r2 was calculated with 0.9625. This value was considered as sufficiently high to use the calibration function for the determination of the log POW of the test substance Glutardialdehyde bis-Sodiumbisulfite. The test item solution showed 1 peak with reproducible retention time. Due to the fact, that the retention time of the test substance peak lay below the retention time of thiourea (log POW is not calculable) the log POW of this peak could not be calculated and is stated as < 0.3 (log POW of 2-Butanone as reference substance with the lowest log POW).
Applicant's summary and conclusion
- Conclusions:
- Using the correlation log K / log POW, the log POW of the test substance peak was not calculable, because the retention time lay below the retention time of thiourea. The log POW of the test substance is stated as < 0.3 (log POW of 2-Butanone as reference with the lowest log POW) therefore.
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