Registration Dossier
Registration Dossier
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EC number: 200-922-5 | CAS number: 75-98-9
Dissociation constant
Administrative data
- Endpoint:
- dissociation constant
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 020
- Report date:
- 2020
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 112 (Dissociation Constants in Water)
- Deviations:
- no
- GLP compliance:
- yes
Test material
- Reference substance name:
- Pivalic acid
- EC Number:
- 200-922-5
- EC Name:
- Pivalic acid
- Cas Number:
- 75-98-9
- Molecular formula:
- C5H10O2
- IUPAC Name:
- 2,2-dimethylpropanoic acid
- Details on test material:
- - Name of test material (as cited in study report): MRD-64-1
- Substance type: white crystalline powder
Constituent 1
- Specific details on test material used for the study:
- Test item: Pivalic Acid.
Test item identity (including alternative names): 2, 2-dimethylpropanoic acid, VERSATIC™ Acid 5.
CAS number: 75-98-9
Intended use: Industrial Chemical, used in many chemical manufacturing processes.
Appearance: White crystalline solid at 20. .
Storage conditions: At ambient temperature (15 to 25C).
Supplier: Sponsor
Batch number: PV8A0174
Expiry date: Technical data sheet stated that the shelf life should be three years starting from the date of manufacture.
Physical state Solid at 20°C, liquid at 35°C.
Purity: 99.4%
Results and discussion
- Dissociating properties:
- yes
Dissociation constant
- pKa:
- 4.85
- Temp.:
- 20 °C
Applicant's summary and conclusion
- Conclusions:
- The dissociation constant in water of the test item at 20.0 ± 0.5 °C has been determined to be 4.85.
- Executive summary:
The dissociation constant in water of Pivalic acid at 20.0 ± 0.5 °C has been determined to be 4.85, using a titration method designed to be compatible with Method 112 of the OECD Guidelines for Testing of Chemicals, 12 May 1981.
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