Registration Dossier
Registration Dossier
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EC number: 201-744-0 | CAS number: 87-41-2
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:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- 73.27
- Remarks on result:
- other: Study was performed without adjustment of atm. pressure.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- Secondary literature source no data about the method was available.
- GLP compliance:
- not specified
- Type of method:
- other: no data
- Melting / freezing pt.:
- 70 - 75 °C
- Remarks on result:
- other: Value from generally accepted authoritative handbook. No data available for atm. pressure.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 18 -19 Jan 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 113 Screening test for thermal stability and stability in air
- Qualifier:
- according to guideline
- Guideline:
- other: EU Method A.14 (Explosive properties)
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Melting / freezing pt.:
- ca. 73.76 °C
- Remarks on result:
- other: Two DSC measurements in closed glass crucibles with the test item showed an endothermal effect in the temperature range of 60-85 °C.
Referenceopen allclose all
The DSC measurement was conducted for a study according to A.14. (closed glass crucible) and showed a melting point at approximately 73.76 °C.
Description of key information
The value for the melting point was determined in an experimental study performed equivalent or similar to OECD 102 (BASF AG, 1989). The boiling point of phthalide was found to be 73.27 °C.
In a second experimental study performed according to OECD 113, differential scanning calorimetry (DSC, closed crucible) measurements showed a melting point at approximately 73.76 °C which is in line with other reported values (Winkler, 2018).
In addition, the melting point of phthalide was reported to be in the range of 70-75 °C according to the Knovel Critical Tables (2nd Edition).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 73 °C
Additional information
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