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
Study period:
2 October 1991 - 16 January 1992
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted to GLP in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results.
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes
Type of method:
capillary method
Melting / freezing pt.:
> 360 °C
Melting / freezing pt.:
> 633 K

The test material did not show any sign of melting below 360 °C (the upper temperature limit for the apparatus).

Thus the melting point, although not determinable by this method, is >360 °C.

Conclusions:
The melting point is >360 °C.
Executive summary:

An attempt was made to determine the melting point of the test material using the capillary method in accordance with the standardised guidelines OECD 102 and EU Method A.1.

The test material did not show any sign of melting below 360 °C, which was the upper temperature limit for the apparatus used.

Thus the melting point, although not determinable by this method, is >360 °C.

Description of key information

The melting point is >360 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
360 °C

Additional information

In the key study, it was attempted to determine the melting point of the test material using the capillary method in accordance with GLP and the standardised guidelines OECD 102 and EU Method A.1. The test material did not show any sign of melting below 360 °C, which was the upper temperature limit for the apparatus used. Thus the melting point, although not determinable by this method, is >360 °C.

Supporting information is provided in the form of a second study in which the melting temperature of the test material was assessed in accordance with GLP using a method designed to comply with the standardised guideline EU Method A.1. The determination was carried out using the capillary method and metal block apparatus. No sign of melting or decomposition was noted up to a temperature of 630 K.