Registration Dossier
Registration Dossier
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EC number: 247-015-0 | CAS number: 25470-96-6
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
- 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- other: GLP Compliant, guideline study, available as unpublished report, acceptable with restrictions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)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- 187 °C
- Conclusions:
- Carbonyl(pentane-2,4-dionato-O,O')(triphenylphosphine)rhodium was determined to decompose from approximately 187 °C with a possible melting temperature of 200 °C during this process. However, both thermal events may 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.
Carbonyl(pentane-2,4-dionato-O,O')(triphenylphosphine)rhodium was determined to decompose from approximately 187 °C with a possible melting temperature of 200 °C during this process. However, both thermal events may 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.
Reference
Carbonyl(pentane-2,4-dionato-O,O')(triphenylphosphine)rhodium was determined to decompose from approximately 187 °C with a possible melting temperature of 200 °C during this process. However, both thermal events may 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
Carbonyl(pentane-2,4-dionato-O,O')(triphenylphosphine)rhodium decomposes from approximately 187 °C with a possible melting temperature of 200 °C during this process.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 200 °C
Additional information
O'Connor and Woolley (2011) is a GLP compliant study following OECD TG 102 and is considered reliable and suitable for use as the key study for this endpoint.
Carbonyl(pentane-2,4-dionato-O,O')(triphenylphosphine)rhodium was determined to decompose from approximately 187 °C with a possible melting temperature of 200 °C during this process. However, both thermal events may 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.
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