Registration Dossier
Registration Dossier
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EC number: 241-698-9 | CAS number: 17696-62-7
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2018-01-05 to 2018-02-15
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- CAS No.: 17696-62-7
Batch: 018964K19K
Expiry date: 02 August 2018
Purity: 99.1%
Appearance: White powder
Storage: In darkness at room temperature - Key result
- Melting / freezing pt.:
- 170.1 °C
- Remarks on result:
- other: The melting point was investigated under atmospheric pressure.
- Conclusions:
- The mean melting point of the test item phenyl 4 -hydroxybenzoate was 170.1 °C ± 0.5 °C.
- Executive summary:
The mean melting point of the test item phenyl 4 -hydroxybenzoate determined by differential scanning calorimetry according to OECD guideline 102 was 170.1 °C ± 0.5 °C.
Reference
Two assays were perfomred during the test.
Assay No. 1:
- Gas used: Nitrogen
- Ventilation: Yes
- Crucible used: Aluminium, 120 µl, with lid
- Mass of test item: 11.99 mg
- Program Phase 1: Isotherm at 25 °C for 5 minutes, heating phase from 25 °C to 600 °C at 10 °C/min
The melting point of the test item for this assay was 169.8 °C. The test item became a black carbonised solid after the end of the assay. It remained 6.15 mg in the crucible (corresponding to 51.3% of the initial mass).
Assay No. 2:
- Gas used: Nitrogen
- Ventilation: Yes
- Crucible used: Aluminium, 120 µl, with lid
- Mass of test item: 9.90 mg
- Program Phase 1: Isotherm at 25 °C for 5 minutes, heating phase from 25 °C to 250 °C at 10 °C/min
An orange residue was observed after the end of the assay. It remained 9.56 mg in the crucible (corresponding to 96.6% of the initial mass).
Description of key information
The mean melting point of the test item phenyl 4 -hydroxybenzoate determined by differential scanning calorimetry according to OECD guideline 102 was 170.1 °C ± 0.5 °C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 170.1 °C
Additional information
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