Registration Dossier
Registration Dossier
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EC number: 701-208-0 | CAS number: -
Dissociation constant
Administrative data
- Endpoint:
- dissociation constant
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2018/04/6
- Reliability:
- 2 (reliable with restrictions)
Cross-reference
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 112 (Dissociation Constants in Water)
- Deviations:
- yes
- Remarks:
- Use of ethanol + toluene + water solvent
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Test material
- Reference substance name:
- Phenol, paraalkylation products with C10-15 branched olefins (C12 rich) derived from propene oligomerization, carbonates, calcium salts, sulfurized, including distillates (petroleum), hydrotreated, solvent-refined, solvent-dewaxed, or catalytic dewaxed, light or heavy paraffinic C15-C50
- EC Number:
- 701-208-0
- Molecular formula:
- A precise molecular formula can not be provided as the substance is a UVCB.
- IUPAC Name:
- Phenol, paraalkylation products with C10-15 branched olefins (C12 rich) derived from propene oligomerization, carbonates, calcium salts, sulfurized, including distillates (petroleum), hydrotreated, solvent-refined, solvent-dewaxed, or catalytic dewaxed, light or heavy paraffinic C15-C50
Constituent 1
- Specific details on test material used for the study:
- sample of the substance
Results and discussion
- Dissociating properties:
- ambiguous
Dissociation constantopen allclose all
- No.:
- #1
- pKa:
- ca. 8
- Remarks on result:
- other: determined by pKb
- Remarks:
- pH =7
- No.:
- #2
- pKa:
- ca. 7.2
- Remarks on result:
- other: determined by pKb
- Remarks:
- pH = 5
Applicant's summary and conclusion
- Executive summary:
Due to the limited solubility of the sample in water, different solvents were evaluated to find the most suitable solvent system for the titration.
The sample was insoluble in ethanol-water solvent system at room temperature.
toluene-ethanol-water solvent system was used to calculate the pKb for OLOA 218A. As OECD 112 guideline for titration was no longer followed, the calculated Pkb 1 value using this solvent system is 6.8 and Pkb 2 value using this solvent system is 6.0.
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