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:
15 August 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
27 July 1995
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
capillary method
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: A0076
- Expiration date of the lot/batch: 2021

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Ambient (15±10°C), in the dark
- Stability under test conditions: Stable

Key result
Melting / freezing pt.:
>= 300 °C
Atm. press.:
ca. 101 325 Pa

The test item was observed over a temperature range of 100 to 300°C. No change was observed up to 215°C. The material started to brown and char above 215°C.

The test material developed a mottled appearance, light tan colour with black flecks, darkening further between 280°C and 290°C and almost entirely black at 300°C.

There was a small amount of black ‘tarry’ condensate higher up the tube. The charred material smelled of burnt plastic. There were some lighter coloured chalk type material residues in amongst the black ‘tar’/’soot’. As no melting point was observed up to 300°C the conclusion of this study is that the substance has a melting point ≥300°C based on the majority of the results obtained.

Conclusions:
The test material did not melt under the test conditions, therefore, the melting point is ≥300°C.
Executive summary:

Crane J (2018) is a GLP-compliant study following OECD guideline 102 and is therefore reliable without restrictions (Klimisch 1). The study was conducted using a capillary method.

The test item was observed over a temperature range of 100 to 300°C. The test item did not melt under the test conditions, therefore, the melting point is ≥300°C.

Description of key information

The melting point of the test substance is ≥300°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
300 °C

Additional information

The study was conducted following OECD guideline 102 and is GLP-compliant and is therefore reliable without restrictions. The melting point was determined by the capillary method. The test item did not melt under the test conditions, therefore it was concluded that the melting point is ≥300°C.