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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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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:
data from handbook or collection of data
Justification for type of information:
peer-revied literature/handbook can be stated as reliable with restrictions
Qualifier:
no guideline followed
Principles of method if other than guideline:
experimental value, not further specified
GLP compliance:
no
Type of method:
other: not defined
Key result
Melting / freezing pt.:
137 °C
Conclusions:
The melting point of the test substance is 137 °C.
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:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
>= 127.9 - <= 129.4 °C
Key result
Decomposition:
yes
Remarks:
Decomposition was observed at a temperature above the melting range.
Decomp. temp.:
200 °C
Conclusions:
The melting range of bis(pentane-2,4-dionato-O,O’)zinc is 127.9 till 129.4 °C The crystallization is about 97 °C. Decomposition starts at 200 °C.
Executive summary:

The melting point of Bis(pentane-2,4-dionato-O,O’)zinc was determined according to OECD Guidelines for the Testing of Chemicals Test No. 102: Melting Point/ Melting Range Section 18: Differential scanning calorimetry (DSC) and EU Annex V A11.4.4.2 Differential scanning calorimetry (DSC) in accordance with European Chemicals Agency (ECHA), Guidance on information requirements and chemical safety assessment, Chapter R.7a, Endpoint specific guidance, May 2008.

Description of key information

The melting range of bis(pentane-2,4-dionato-O,O’)zinc is 127.9 till 129.4 °C The crystallization is about 97 °C. Decomposition starts at 200 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
128 °C

Additional information