Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
February 21, 2018
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
according to guideline
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
adopted July 27, 1995
according to guideline
other: OECD Guideline 113 (creening Test for Thermal Stability and Stability in Air)
Version / remarks:
adopted May 12, 1981
GLP compliance:
yes (incl. QA statement)
Type of method:
thermal analysis
Melting / freezing pt.:
145.5 - 150.4 °C
Decomp. temp.:
199 °C

Before the test the appearance of test item was dark purple powder; after the experiments, the test item melted, blackened and its volume increased in the crucible.

Sample weight [mg] Total loss of Mass (%) Onset of effect [°C] Endset of effect [°C] Left Limit [°C] Right Limit [°C] Energy [J/g]
Experiment 1 2.9 28.6 145.78 150.15 129.00 155.09 79.05 (endothermic)
290.08 354.19 199.81 380.09  -1113.09 (exothermic)
Experiment 2 2.71 25.8 145.29 150.62 129.08 155.08 75.30 (endothermic)
289.24 353.58 199.82 380.07  -1116.86 (exothermic)
The substance melts between 145.5 – 150.4 °C and undergo decomposition from ca 199 °C
Executive summary:

The thermal behaviour of the test substance was investigated by Differential Scanning Calorimetry method, according to the OECD guideline 102 and 113.

A small amount of test item was weighed into a one-way 40 µl aluminum crucible and sealed with closed aluminum lid using a capsule presser. Thus, prepared capsule was inserted into the furnace of the DSC device and heated from 25 to 500 °C with 10 °C/minutes heating rate. As reference sample an empty crucible of the same type was used. The heat flow and any thermal events were recorded, as well as the onset and the related energy.

The measurement was performed under nitrogen atmosphere. Before and after the test, the weight and the appearance of the sample were determined.

The experiment was performed in duplicate.

Using a linear heating rate, the melting point was determined to be in the range of 145.5 – 150.4 °C (418.7 – 423.5 K). Based on the results of the DSC curves and the appearance of test item after the tests, it is concluded the test item starts to decompose at ca 199 °C.



The substance melts between 145.5 – 150.4 °C and undergo decomposition from ca 199 °C.

Description of key information

The substance melts between 145.5 – 150.4 °C and undergoes decomposition from ca 199 °C

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
145.5 °C

Additional information

OECD 102 and 113 - Differential Scanning Calorimetry