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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:
2011-04-27
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
The study was not conducted under GLP.
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: ISO 9001:2008
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
< -100 °C
Atm. press.:
101.325 kPa

 

Test

Melting temperature (°C)

1

<-100

2

<-100

Mean value

<-100 (<173K)

Approximate accuracy of equipment: ±0.5 K (up to 600K)

The DSC diagrams show no exothermic or endothermic peak in the temperature range between –100°C (173 K) and +25°C (298 K).

Therefore a melting temperature or change in the structure of the substance must be at less than –100°C (< 173 K). The thermogram is attached.

Conclusions:
A melting point of <-100°C at 1013 hPa has been determined for the test substance uisng a relevant method, but not in compliance with GLP. The result is considered to be reliable.

Description of key information

Melting point: <-100°C at 1013 hPa (OECD 102)

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-100 °C

Additional information

A measured melting point value of <-100°C at 1013 hPa was determined for the substance using an appropriate test method and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable.