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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-09-22 to 2018-02-13
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
>= 116 - <= 124 °C
Atm. press.:
ca. 1 013.3 hPa
Decomposition:
yes
Decomp. temp.:
>= 210 °C

Two DSC measurements with a heating rate of 10 K/min showed an endothermal effect (melting) in the temperature range of 105 - 145 °C. The second DSC measuremnet was terminated at 180 °C to ensure that the endothermal effect is the melting effect.

The results of the DSC measurements are summarized in Table 1 below:

Table 1: Melting point (DSC measurements)

DSC run

Weigh-in / mg

Starting temperature / °C

Final test temperature / °C

Temperature range (endothermal) / °C

Onset / °C

Crucible

Observations after the measurement

1

9.38

25

500

110 - 145

245 - 280

280 - 345

123.8

-

-

Aluminium with hole

Black residue, mass loss: 78%

2

11.29

25

180

105 - 145

116.1

Aluminium with hole

Test item was a yellow solidified melt,

mass loss: 1%
Conclusions:
The test item melted in the temperature range between 116 to 124 °C under atmospheric conditions.
Executive summary:

The melting point / melting range of the test item was determined by DSC measurement according to OECD 102. The study showed melting of the test item under atmospheric conditions in the temperature range between 116 to 124 °C.

Description of key information

The melting point / melting range of the test item was determined by DSC measurement according to OECD 102. The study showed melting of the test item under atmospheric conditions in the temperature range between 116 to 124 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
120 °C

Additional information