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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
28 September 2010 to 26 November 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP Compliant, guideline study, available as unpublished report, acceptable with restrictions
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
yes (incl. QA statement)
Type of method:
other: Differential scanning calorimetry (DSC) using the procedure specified in ASTM E537-86
Melting / freezing pt.:
254 °C
Decomposition:
yes

Test item determined to melt at least partially, with decomposition, from approximately 527K (254 °C), however this thermal event was demonstrated to be sensitive to heating rate. Definitive reported temperatures have been taken from 1 °C /minute heating rate thermograms in compliance with the specified method guidelines.

Conclusions:
Dichlorobis(triphenylphosphine)palladium was determined to melt at least partially, with decomposition, from approximately 527K (254 °C), however this thermal event was demonstrated to be sensitive to heating rate. Definitive reported temperatures have been taken from 1 °C /minute heating rate thermograms in compliance with the specified method guidelines.
Executive summary:

This is a GLP compliant, guideline study which is considered suitable for use as the key study for this endpoint.

Dichlorobis(triphenylphosphine)palladium was determined to melt at least partially, with decomposition, from approximately 527K (254 °C), however this thermal event was demonstrated to be sensitive to heating rate. Definitive reported temperatures have been taken from 1 °C /minute heating rate thermograms in compliance with the specified method guidelines.

Description of key information

Dichlorobis(triphenylphosphine)palladium was determined to melt at least partially, with decomposition, from approximately 254 °C, however this thermal event was demonstrated to be sensitive to heating rate.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
254 °C

Additional information

O’Connor and Woolley (2011) is a GLP compliant study following OECD TG 102 and is considered suitable for use as the key study for this endpoint. Dichlorobis(triphenylphosphine)palladium was determined to melt at least partially, with decomposition, from approximately 527K (254 °C), however this thermal event was demonstrated to be sensitive to heating rate. Definitive reported temperatures have been taken from 1 °C /minute heating rate thermograms in compliance with the specified method guidelines.