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Diss Factsheets

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:
2014-11-20 to 2014-11-21
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose for cross-reference:
reference to same study
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:
no
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
-68.3 °C
Atm. press.:
>= 1 007 - <= 1 014 hPa
Decomposition:
no

A distinct endothermic effect was observed in the temperature range of -75 to -50 °C, which can be associated with the melting of the test item. As the onset temperatures in both test do not deviate by more than 0.5 K from their mean value of 68.31 °C, this temperature can be used as melting point. The test item has a melting point of 68.3 °C

Measurement no.

Onset of Effect / °C

Range of Effect /°C

Atmospheric pressure / hPA

1

-68.40 – 167.49

 

-75 to -50 (endo)

 

1007.1

2

--68.21 – 166.95

-70 to -50 (endo)

 

1007.1

Conclusions:
The test item has a melting point of -68.3°C corected to normal atmospheric pressure (1013 hPa) as determined by differential scanning calorimetry.
Executive summary:

The test item has a melting point of -68.3 °C corected to normal atmospheric pressure (1013 hPa) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).

Description of key information

Melting point: -68.3°C at 1013 hPa

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-68.3 °C

Additional information

The test item has a melting point of -68.3 °C corrected to normal atmospheric pressure (1013 hPa) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).