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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
secondary literature
Principles of method if other than guideline:
no data
GLP compliance:
not specified
Melting / freezing pt.:
> 234 - < 238 °C
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
secondary literature
Principles of method if other than guideline:
data from database, no further information
GLP compliance:
not specified
Melting / freezing pt.:
238 °C
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
abstract
Principles of method if other than guideline:
no data
GLP compliance:
no
Melting / freezing pt.:
> 156 - < 157 °C

Atmospheric pressure is not reported.

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
Principles of method if other than guideline:
secondary peer reviewed source, valid collection of data
GLP compliance:
not specified
Melting / freezing pt.:
> 233 - < 235 °C
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
Principles of method if other than guideline:
secondary peer reviewed source, valid collection of data
GLP compliance:
not specified
Melting / freezing pt.:
238 °C
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
Principles of method if other than guideline:
secondary peer reviewed source, valid collection of data
GLP compliance:
not specified
Melting / freezing pt.:
> 233 - < 238 °C

Atmospheric pressure was not reported.

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
Principles of method if other than guideline:
secondary peer reviewed source, valid collection of data
GLP compliance:
not specified
Melting / freezing pt.:
238 °C
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:
other: Guideline study. Original report in Japanese
Principles of method if other than guideline:
Japanese national guideline (1988)
GLP compliance:
not specified
Melting / freezing pt.:
> 234 - < 236 °C
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
Principles of method if other than guideline:
secondary peer reviewed source, valid collection of data
GLP compliance:
not specified
Melting / freezing pt.:
>= 225 - <= 238 °C

Beilstein reports several melting point values from 52 original references. Reported values were between 189 and 238°C, highest values in the range of 225-238 °C were more abundant.
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
Principles of method if other than guideline:
secondary peer reviewed source, valid collection of data
GLP compliance:
not specified
Type of method:
other: not specified
Key result
Melting / freezing pt.:
238 °C

Atmospheric pressure is not reported.

Executive summary:

Lorz PM, Towae FK, and Bhargava N (Ullmann's Encyclopedia of Industrial Chemistry, 2002)

Melting point of phthalimde: 238 °C

Description of key information

Numerous references report consistent values in the range between 233-238°C, with the value of 238°C being the most frequently reported.


One source reports considerably lower values (156-157°C), which cannot be explained due to the lack of information on the method used. This data point is disregarded as aberrant.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
238 °C

Additional information