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:
August 2012 - August 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes
Type of method:
capillary method
Key result
Melting / freezing pt.:
212.6 °C
Atm. press.:
1 013.25 hPa
Decomposition:
yes
Decomp. temp.:
ca. 211 °C
Sublimation:
no

At the start of the test at 205 °C the test substance was a white powder. The colour of the test substance changed to brown at about 211 °C and started melting at about 212 °C.

The results of 3 repeated determinations of the melting temperature of the test substance were: 213.0, 212.9 and 211.9 °C. The mean melting temperature of the test item was 212.6 °C, with a standard deviation of 0.61. In each case the melted test substance appeared brown.

Conclusions:
The mean melting temperature of the test item was determined to be 212.6 °C under decomposition.
Executive summary:

A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1 and EPA OCSPP test guideline 830.7200 to determine the melting point of the test item using capillary method. At the start of the test at 205 °C the test substance was a white powder. The colour of the test substance changed to brown at about 211 °C. The test substance melted at 212.6 °C. Identical observations were made in the three samples. Thus it was concluded that the test item decomposed before and during melting. Decomposition was indicated by a significant change of colour at about 211 °C. The decomposed test substance melted at the 212.6 °C.

Description of key information

The mean melting temperature of the test item was determined to be 212.6 °C under decomposition.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
212.6 °C

Additional information

A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1 and EPA OCSPP test guideline 830.7200 to determine the melting point of the test item using capillary method. At the start of the test at 205 °C the test substance was a white powder. The colour of the test substance changed to brown at about 211 °C. The test substance melted at 212.6 °C. Identical observations were made in the three samples. Thus it was concluded that the test item decomposed before and during melting. Decomposition was indicated by a significant change of colour at about 211 °C. The decomposed test substance melted at the 212.6 °C.