Registration Dossier
Registration Dossier
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EC number: 273-967-1 | CAS number: 69322-01-6
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- January 2014
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 014
- Report date:
- 2014
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- Differential scanning calorimetry (DSC)
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- Sodium 4-hydroxyphenylglycolate
- EC Number:
- 273-967-1
- EC Name:
- Sodium 4-hydroxyphenylglycolate
- Cas Number:
- 69322-01-6
- Molecular formula:
- C8 H7 Na O4
- IUPAC Name:
- sodium 4-hydroxyphenylglycolate
- Test material form:
- solid: crystalline
Constituent 1
- Specific details on test material used for the study:
- STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: no data
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- ca. -11 °C
- Decomposition:
- yes
- Decomp. temp.:
- 166 - 169 °C
Any other information on results incl. tables
Three endothermic phenomenon are observed:
- between -21 and 3°C (onset at -11.1°C, peak maximum at -6.2°C): melting point
- between 135 and 153°C (onset at 141.9°C, peak maximum at 147°C)
- between 153 and 171.1°C (onset at 166.7°C, peak maximum at 169.1°C): degradation
One exothermic phenomenon is also observed:
- between 171 and 240°C (peak maximum at 175.2°C): enthalpy 164J/g
Applicant's summary and conclusion
- Conclusions:
- The melting point of p-hydroxymandelic acid, sodium salt is ca. at -11.1°C.
- Executive summary:
The melting point of p-hydroxymandelic acid, sodium salt was measured by a Differential scanning calorimetry (DSC) method. The result is ca. at -11.1°C.
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