Registration Dossier

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
04-Nov-2015 to 10-Nov-2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline 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:
thermal analysis
Remarks:
Differential Scanning Calorimetry (DSC)
Melting / freezing pt.:
>= 64 - <= 74 °C
Atm. press.:
1 013 hPa
Remarks on result:
other: Based on the obtained DSC diagrams it is most likely the substance is a liquid crystal. This is supported by the chemical structure of the substance as well. The second transition next to melting corresponds to the isotropization process.

Results

The cooling run shows the beginning of a crystallization at ca. 67 °C.

According to the definition in the OECD Guideling 102 (mean value from repeat determinations), in the first heating run, the test item shows a melting range between 64 and 74 °C.

Results from 3 repeat determinations (first melting range)

1st measurement: 64 - 74 °C

2nd measurement: 64 - 75 °C

3rd measurement: 64 - 74 °C

Based on the obtained DSC diagrams it is most likely the substance is a liquid crystal. This is supported by the chemical structure of the substance as well. The second transition next to melting corresponds to the isotropization process.

Description of key information

Melting range: 64 to 74 °C at ca. 1013 hPa (OECD 102, Differential scanning calorimetry)

Key value for chemical safety assessment

Additional information

The melting range of the test substance 2,2-bis(hydroxymethyl)propane-1,3-diyl didocosanoate (CAS: 68258-72-0) was determined according to OECD guideline 102.