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Physical & Chemical properties

Melting point / freezing point

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Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from July 24, 2007 to September 5, 2007
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
> 640 °C
Atm. press.:
ca. 1 atm
Decomposition:
no
Remarks on result:
other: The substance does not melt in the temperature range 30-640ºC.
Conclusions:
No endothermic peak corresponding melting of the test substance was recorded in the tested temperature range from 30 to 640 ºC.
Definite values of melting temperature of the test substance, Humic acids, sodium salts, could not be determined in the tested temperature range 30 to 640ºC.
Executive summary:

The melting temperatures of the test substance was determined. The Differential Scanning Calorimetry method was used. The procedures used in the study were in accordance with:

Method A.1. Melting/freezing Temperature (1.4.4.2 Differential scanning calorimetry), Directive 92/69/EEC. Published in OJ No L 383A, December 1992.

Description of key information

Method A.1. Melting/freezing Temperature (1.4.4.2 Differential scanning calorimetry), Directive 92/69/EEC. Published in OJ No L  383A, December 1992. 
GLP study.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
913 K

Additional information

No endothermic peak corresponding melting of the test substance was recorded in the tested temperature range from 30 to 640 ºC.

Definite values of melting temperature of the test substance, Humic acids, sodium salts, could not be determined in the tested temperaturerange 30 to 640ºC.