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EC number: 222-164-4 | CAS number: 3375-31-3
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
- Study period:
- 28 September 2010 to 25 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- other: GLP Compliant, guideline study, available as unpublished report, acceptable with restrictions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)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Principles of method if other than guideline:
- Differential scanning calorimetry (DSC) using the procedure specified in ASTM E537-86
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- other: method details not known but value taken from a peer-reviewed handbook
- Decomposition:
- yes
- Decomp. temp.:
- 204 °C
- Conclusions:
- Palladium (II) acetate decomposed from approximately 204 °C with no definitive signs of melting below 450°C.
- Executive summary:
This is a GLP compliant, guideline study which is considered suitable for use as the key study for this endpoint. Palladium (II) acetate decomposed from approximately 204 °C with no definitive signs of melting below 450°C.
Reference
| Thermal Event | Temperature (°C) | |
| Determination 1 | Determination 2 | |
| Approximate onset of exotherm | 203.7 | 204.42 |
| Extrapolated onset of exotherm | 250.89 | 249.34 |
| Exotherm peak temperature | 256.3 | 254.42 |
As a result of the low rate of enthalpy change during decomposition, the onset temperature can only be approximated. Similar thermographic profiles were obtained using air and nitrogen atmospheres; this indicates that the observed decomposition is probably thermal and not oxidative
Description of key information
Palladium (II) acetate decomposed from approximately 204°C with no definitive signs of melting below 450°C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 450 °C
Additional information
O’Connor and Woolley (2011) is a GLP compliant study following OECD TG 102, which is considered suitable for use as the key study for this endpoint. Palladium (II) acetate decomposed from approximately 204 °C with no definitive signs of melting below 450°C.
The CRC Handbook (Lide, 2008) is a reliable peer reviewed handbook and so can be considered reliable and suitable for use as a supporting study for this endpoint. The melting point of Palladium (II) acetate is 205°C.
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