Registration Dossier
Registration Dossier
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EC number: 235-911-4 | CAS number: 13040-19-2
Dissociation constant
Administrative data
- Endpoint:
- dissociation constant
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 08.10.2012-15.10.2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: well documented guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
- Report date:
- 2012
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: DIN EN ISO/IEC 17025
- Deviations:
- no
- GLP compliance:
- no
Test material
- Reference substance name:
- Zinc diricinoleate
- EC Number:
- 235-911-4
- EC Name:
- Zinc diricinoleate
- Cas Number:
- 13040-19-2
- Molecular formula:
- C18H34O3.1/2Zn
- IUPAC Name:
- zinc bis(12-hydroxyoctadec-9-enoate)
Constituent 1
Results and discussion
- Dissociating properties:
- yes
Dissociation constant
- pKa:
- 6.9
- Temp.:
- 20 °C
- Remarks on result:
- other: Average value of three runs
Any other information on results incl. tables
| First run | Second run | Third run | |
| pKs | 7.21 | 6.49 | 7.03 |
| pH value of solution | 6.60 | 6.00 | 6.73 |
| Mean value of pKs | 7.2 | 6.5 | 7.0 |
Applicant's summary and conclusion
- Conclusions:
- The disssociation constant of Tego Sorb Py 88 was determined to be 6.9
- Executive summary:
The dissociation constant of Tego Sorb PY 88 was determined according to DIN EN ISO/IEC 17025 at 20 °C. The average value obtained from three runs was 6.9.
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