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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
Study period:
19.10.2009 to 10.12.2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
no
Other quality assurance:
other: EN ISO 9001
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
4-(Methacryloyloxy) bezophenone 97.26 %
Benzophenone acetate: 1.95 %
Key result
Melting / freezing pt.:
70 °C
Atm. press.:
1 018 hPa
Conclusions:
In the first heating cycle from -20 °C to 150 °C the DSC-curve shows an endothermic peak at
70,2 °C with an onset temperature of 68,1 °C. This peak is assigned to the melting point of the
specimen. The melting enthalpy is 88,2 J/g. In the second heating cycle the peak was detected
with approximately the same melting enthalpy, onset and peak temperature.
The melting temperature of the test item was determined by differential scanning calorimetry
according to EEC-Directive 92/69 EEC, Part A, Methods for the determination of physico-chemical
properties, A. 1 ,Melting temperature'"', EEC Publication No. L383, December 1992.
Melting Point: 70 °C.

Description of key information

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
70 °C

Additional information