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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data from peer reviewed journal (referred to in TPP Hazard Review, US EPA, 29th August 2005)
Qualifier:
no guideline followed
Principles of method if other than guideline:
No details given
GLP compliance:
not specified
Type of method:
other: no detail given
Specific details on test material used for the study:
Triphenyl phosphate was purified by recrystallisation from methanol
Melting / freezing pt.:
49.5 - 50 °C
Conclusions:
Melting point values within the range 49 -50.5C are reported in a variety of reputable secondary sources.
Executive summary:

Melting point values within the range 49 -50.5C are reported in a variety of reputable secondary sources.

Description of key information

The melting point of TPP is 49.5 - 50 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
323 K

Additional information

Whilst the melting point values are reported within the range of 49 -52 °C. The publication by Dobry & Keller, where purification of TPP from methanol is specified, gives the narrow range of 49.5 -50 °C