Registration Dossier
Registration Dossier
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EC number: 201-901-3 | CAS number: 89-36-1
Partition coefficient
Administrative data
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: According to OECD 107
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- Type of method:
- shake-flask method to: flask method
- Partition coefficient type:
- octanol-water
Test material
- Reference substance name:
- 4-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzene-1-sulfonic acid
- EC Number:
- 201-901-3
- Cas Number:
- 89-36-1
- Molecular formula:
- C10H10N2O4S
- IUPAC Name:
- 4-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzene-1-sulfonic acid
Constituent 1
Study design
- Analytical method:
- photometric method
Results and discussion
Partition coefficient
- Type:
- log Pow
- Partition coefficient:
- -2.04
- Temp.:
- 23 °C
- pH:
- ca. 7
- Remarks on result:
- other: mean
Any other information on results incl. tables
Table 1: Results
no. |
stock solution [mL] |
n-octanol [mL] |
conc. in n-octanol phase [mg/L] |
conc. in water phase [mg/L] |
Log pow |
A1 |
5 |
10 |
4.9 |
621.2 |
-2.10 |
A2 |
5 |
10 |
5.0 |
623.8 |
-2.09 |
B1 |
10 |
10 |
5.7 |
619.5 |
-2.04 |
B2 |
10 |
10 |
5.7 |
619.5 |
-2.03 |
C1 |
20 |
10 |
6.7 |
620.4 |
-1.97 |
C2 |
20 |
10 |
6.3 |
624.2 |
-1.99 |
mean |
- |
- |
- |
- |
-2.04 |
Stock solution: 632.7 mg/l
Applicant's summary and conclusion
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