Registration Dossier

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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
GLP compliance:
not specified
Type of method:
capillary method
Key result
Melting / freezing pt.:
126.4 °C
Atm. press.:
ca. 1 013 hPa
Decomposition:
yes
Decomp. temp.:
>= 158 °C
Remarks on result:
other: Atmospheric pressure not reported. Based on capillary method, ca. 1013 hPa can be assumed.

Measurements

Experiment number

1

2

Stage B temperature / °C

126.2

126.6

Average / °C

126.4

 

Decomposition

In both measurements, colour changes were observed from 158 °C. The sample turned from yellowish to dark brown.

The decomposition was not spontaneous and extended over a larger temperature range. No further decomposition was observed after the sample was removed from the apparatus at the beginning of decomposition.

Description of key information

Melting point: 126.4 °C at ca. 1013 hPa (OECD Guideline 102, capillary method)

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
126.4 °C

Additional information

Decomposition was observed starting at temperature ≥ 158 °C

Atmospheric pressure not reported. Based on capillary method, ca. 1013 hPa can be assumed.